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Fluke RPM4 Computer Monitor User Manual

1. 121 Troubleshooting G der ssis iss iet dee dpi oe ER dt eu tue 131 Pressure Unit of Measure Conversion Coefficients 136 DHI Authorized Service Providers sise 137 Page V 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL H DH Instruments F l G U R ES A Fluke Company Figure l Front Panel uit tre te a ae aa AS re Hat a gibt detis 8 Figure 2 R ar e E ete ee eb tt 9 Figure 3 MAIN RUN Screen Display Fields is 16 Figure 4 Keypad Layouts e edit Be eee el ae le A 17 Figure 5 Battery Pack Charger iii 23 Figure 6 Status Register Schematic sise 109 Figure 7 Internal VIGw ie Ein eet ee e eR etes Eel 127 Figure 8 Pneumatic hydraulic schematics of RPM4 with Single Q RPT Module 129 Figure 9 Pneumatic hydraulic schematics of RPM4 with Two Q RPT 130 Figure 10 Remote ENT Connector Schematic sse ene 135 2004 2007 DH Instruments a Fluke Company Page VI ABOUT THIS MANUAL Instruments ABOUT THIS MANUAL This manual is intended to provide the user with the basic information necessary to operate an RPM4 reference pressure monitor It also includes a great deal of additional information provided to allow you to optimize RPM4 use and take
2. RPM4 OPERATION AND MAINTENANCE MANUAL UDU Purpose Read or set the user defined pressure unit Command UDU abel ucoef Query UDU Classic UDU abel ucoef UDU label User unit label 4 alphanumeric char maximum It cannot be an already supported unit label Ucoef User unit conversion coefficient units Pa Default UDU USER 1 0 Remarks The user defined unit must be set up with the program message prior to remote or local selection Example Cmd Sent UDU MYUN 001 enhanced Query reply MYUN 0 001000 No reply if GPIB 488 Example Cmd Sent UDU MYUN 001 enhanced Query reply MYUN 0 001000 Example Sent UDU MYUN 001 enhanced Reply MYUN 0 001000 Errors See Also 3 5 6 3 3 2 ULn Purpose Read or set an upper limit for the specified or active Q RPT Command Uln limit Query Uln Classic Uln limit ULn Optional Suffix n The active Q RPT is assumed if no suffix is given 47 Specify the Hi Q RPT if the Hi and Lo Q RPTs NOT OFF and the HL Q RPT is not active Specify the HL Q RPT if the Hi and Lo Q RPTs are OFF 2 Specify the Lo Q RPT if the HL Q RPT is not active and measurement mode is not differential 3 Specify the HL Q RPT if the HL Q RPT is active Arguments limit The upper limit pressure in the specified Q RPT s current pressure unit and measuremen
3. new DISPLAY choice see Section 3 3 6 33 63 Dev Deviation O PURPOSE To activate the Deviation DISPLAY and or set the deviation target value See Section 3 3 6 DISPLAY O Principle O OPERATION To activate the Deviation DISPLAY press Target DISPLAY lt 3Dev gt The display is 100 0000 psi a Edit the desired target value Pressing ENT returns to the main run screen with the Deviation DISPLAY active using the entered target value The target value is the value from which deviations D are measured by the Deviation DISPLAY following D current pressure target pressure With the Deviation DISPLAY active the main run screen is 1 Deviation of current pressure from the target 32 1135 psi A mus value D 0 8865 T100 0000 2 Target value 1 F Pressing ENT from the main run screen when the Deviation DISPLAY is active goes directly to the Target editing screen This allows the target value to be changed without going through the DISPLAY menu If the pressure measurement unit or mode is changed while the Deviation DISPLAY is active the target value remains at the same numerical value It is NOT converted To go to a DISPLAY other than Deviation press DISPLAY and make a new DISPLAY choice see Section 3 3 6 2004 2007 DH Instruments a Fluke Company Page 38 3 OPERATION 33 64 RPT PURPOSE To activate the RPT DISPLAY E See Section 3 3 6 O Principle Th
4. roles 81 41 OVERVIEW nn tan ut 81 4 2 lt INTERFACING oen an nn ed een 81 4 2 1 RS232 INTERFACE n 91 4 2 1 1 oo i E E E A E A E T on ua 81 4 2 1 2 HL d MELLE 2 82 D DL 82 4 3 PROGRAMMING FORMATS ccsccscssccssssssssssssscssesscsscsscsscsssssessssscssssssssesscssssssssssssssssesssesatssssessassenssaes 82 43 1 CLASSIC PROGRAM MESSAGE FORMAT nn 83 4 3 2 ENHANCED PROGRAM MESSAGE FORMAT 2 83 4 8 2 1 USING COMMAND TYPE COMMANDS 2 83 42309 USING QUERY TYPE COMMANDS cc meet 84 44 COMMANDS 85 441 PROGRAMMING MESSAGES 2 85 44 2 ERROR 55 66 2 2 2 221222424 4 41 86 44 3 PROGRAM MESSAGE DESCRIPTION OVERVIEW 2 87 4 4 4 PROGRAM MESSAGE DESCRIPTIONS POM 88 4 5 STATUS REPORTING SYSTEM cette tette trente tte tte sese sp sese M DeL LIE 453 EHBOR QUEUE ccce Ire e metri 4 5 2 STATUS BYTE REGISTER 45 3 STANDARD EVENT REGISTER 454 READY STATUS REGISTER 2220 tandem en o aod 4 6 IEEE STD 488 2 COMMON AND STATUS PROGRAM 111 4 6 1 PROGRAM MESSAGE DESCRI
5. Page 111 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL 4 6 1 PROGRAM MESSAGE DESCRIPTIONS CLS Purpose Clear all of the status amp event structures Command xCLS Remarks This program message clears the following events and status registers Standard Byte Register STB Standard Event Status Register ESR Error Queue Pending OPC operations Example Sent OLS Reply none ESE Purpose Read or set the Standard Event Status Enable Register Command m Query ESE Default 0 Arguments n 010255 This is the decimal representation of the bit s to enable To enable the PON and QYE bits the argument would be 128 4 132 Remarks The Standard Event Status Enable register determines which bits in the standard Event Status Register are enabled and included in the Status Byte Register ESB bit and can assert the SRQ line The reply is in decimal numeric form Example Sent ESE 128 enables the PON bit enhanced Query reply 128 no reply if IEEE 488 Errors ERR 6 nis not valid ESR Purpose Read the Standard Event Register Command ESR Remarks The Standard Event Register contents are cleared after reading The reply is in decimal numeric form Example Sent ESR enhance
6. The RPM4 COM2 RS232 interface is located on the back of the unit It can be used to allow the host computer to communicate with another device through the RPM4 This allows the user to use one host COM port to communicate with the RPM4 and an additional RS232 device Refer to the remote program command for details When using the RPM4 as a reference for a PPC3 another RPM4 can be connected to the first RPM4 s COM port allowing the PPC3 to communicate with both RPM4s see Section 3 2 5 COM2 is a 9 pin female DB 9F connector configured as a DTE device Data is transmitted out of the RPM4 using pin 3 and is received on pin 2 This allows a normal pin to pin DB 9M to DB 9F RS232 cable to be used to connect to a DCE device Handshaking is not required or supported Table 15 COM2 DB 9F Pin Designations PIN FUNCTION DESCRIPTION 2 RxD This pin transmits serial data from the to a device 0 3 DD This pin accepts serial data from the external device 4 DTR This pin is Data Terminal Ready DTR held at 5 V 5 Gm This pin is the common return for the TxD and RxD signals 4 3 PROGRAMMING FORMATS RPM4 supports two program message formats the classic and the enhanced formats The user must select which format to use Selection can be accomplished from the front panel see Section 3 5 2 3 or remotely using the L2 or L3 program message see Section 4 4 4 The MSGFMT command ca
7. If a Gxxx Q RPT is active only gauge measurement mode is supported When the MODE key is pressed Gauge RPT gauge mode only is displayed If the Hi Q RPT is active in its default range DF and the RPM4 has two Q RPTs of the same type Axxx Gxxx BGxxx differential measurement mode is available in addition to the other modes see Section 3 3 3 1 E Certain RPM4 settings including AutoZ ON OFF see Section 3 5 1 are range AND measurement mode specific See Table 4 for a listing of settings and what they are specific to Absolute and negative gauge modes on an Axxx Q RPT can be turned OFF in the calibration function see Section 5 2 5 When absolute and negative gauge mode are turned OFF for an Axxx Q RPT only gauge mode can be activated lt Gauge mode only other modes OFF gt is displayed when MODE is pressed 33 31 DIFFERENTIAL MEASUREMENT MODE OPERATION gt Differential mode operation is only available on the Hi default DF range in RPM4s that are equipped with two Q RPTs Hi and Lo of the same type Axxx Gxxx BOxxx To activate differential measurement mode press MODE from the MAIN RUN screen while the Hi Q RPT is active and in its default DF range The actual display depends upon the measurement modes available on the Hi Q RPT The cursor is on the base measurement mode The line pressure measurement mode is the base pressure measurement mode Meas mode labs 2ga
8. Page 85 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL COMMAND m indicates an DESCRIPTION optional suffix ULn Read or set the upper limit for the current range UNITA Read or set the pressure unit of measure for the current range VER Read the RPM4 software version ZOFFSETn Read or set the AutoZero 2 for the specified Q RPT ZOFFSET XX Read or set the AutoZ Zottset for the specified Q RPT old command 4 4 2 ERROR MESSAGESS Table 17 Error s and Descriptions REPLY DESCRIPTION ERR 0 OK ERR 2 Text argument is too long ERR 3 Arguments cannot be 0 ERR 4 External device not detected ERR 5 Not used ERR 6 Numeric argument missing or out of range ERR 7 Missing or improper command argument s ERR 8 External device time out error ERR 9 Unknown command ERR 10 Missing or invalid command suffix ERR 11 Command missing argument ERR 12 System overpressured or overpressure may result ERR 13 Text queue overflow ERR 14 User unit not defined ERR 17 Not used ERR 18 Command not yet available ERR 19 Not available with absolute units ERR 20 Not available with gauge device ERR 21 Not used ERR 22 Pressure is not stable ERR 23 Option not available or installed ERR 25 Not used ERR 26 COM port failed to initialize ERR 27 Internal
9. RESm Default RESn 0 001 Optional Suffix n The active Q RPT is assumed if no suffix is given 47 Specify the Hi Q RPT if the Hi and Lo Q RPTs are NOT OFF Specify the HL Q RPT if the Hi and Lo Q RPTs are OFF 2 Specify the Lo Q RPT 7 Specify the HL Q RPT if the HL Q RPT is active Arguments res The pressure display resolution in span of the specified Q RPT range 0 0001 to 1 FS Remarks The pressure display resolution is defined as span of the active range The setting is separate for each range and changes as the range is changed Example sent RES 01 enhanced Query reply 0 01 No reply if GPIB 488 Example Cmd sent RES 01 enhanced Query reply 0 01 Example Sent RES 01 classic Reply 0 01 Errors ERR 6 The argument is invalid See Also 3 4 2 RESET Purpose Reset the user s settings to factory defaults Command RESET Classic RESET Remarks The RPM4 has user settings units resolution etc that can be reset to factory defaults The remote RESET program message corresponds to the front panel Reset Sets System calibration coefficients and communications settings are not affected The reset cycle takes up to 3 seconds to complete Remote communications should not take place during this period Example sent RESET enhanced Reply RESET no reply if IEEE 4
10. The value from which deviations are measured in the Deviation DISPLAY function UL Upper Limit A user settable maximum pressure limit When pressure exceeds UL RPM4 beeps PP intermittently In negative gauge measurement mode there is also a user settable lower limit Levels of security that can be set to protect certain RPM4 functions from being accessed QDUT On board automated test sequence that AutoRanges RPM4 based on characteristics of the Device Under Test DUT 2004 2007 DH Instruments a Fluke Company Page 140
11. gt lt isave gt The display is 1 Indication that this is a range to be saved 1 2 2 Designator and position of the Q RPT used by the range to be saved 2 4 i Save range A700K Hi 3 unit of measure of the range to be 300g 100a 4 Full scale pressure of the range to be saved in gauge mode and absolute mode if available 3 4 Press ENT to save the range or ESC to return to the MAIN RUN screen without saving the range s Default DF Q RPT ranges cannot be saved They are permanent Duplicate AutoRange ranges cannot be saved A duplicate AutoRange range ie a range that has the same measurement mode and full scale and uses the same Q RPT as a range that has already been saved 34 12 DELETING AUTORANGE RANGES O OPERATION To delete a single saved AutoRange range press SETUP lt 1range gt lt 2delete gt If there are any saved ranges available to delete the display is 1 Indication that the cursor control keys may be 2 used to toggle through the saved ranges to select the one to be deleted 2 Designator and position of the Q RPT used by the range to be deleted lt and gt A700K Hi 3 Pressure unit of measure of the range to be kPa 300g 100a deleted t t 4 Full scale pressure of the range to be deleted 3 4 in gauge mode and absolute mode if available Use the cursor control keys to toggle through the ranges available to be deleted When the desired range to be dele
12. 0 1 The BG15K span is 15 to 15 kPa 30 kPa total Therefore 0 96 is 15 kPa 25 is 7 5 kPa 100 is 15 kPa etc BGxxx bi directional gauge Q RPTs that will NOT be used in negative gauge measurement mode may be calibrated in gauge positive pressures measurement mode only Use the Standard Class gauge mode Gxxx calibration point sequence see Table 22 BGxxx Q RPTs calibrated in gauge measurement mode only should not be used in negative gauge mode Table 24 Calibration Point Sequence Standard Class BA100K Q RPT CALIBRATION POINT POINT SEGMENT NO OF SPAN Ascending 100 i 7 Descending 7 8 25 9 029 1 The BA100K span is 70 to 110 kPa absolute 5 242 PREMUMCLASS Q RPTS See additional information in Section 5 2 4 concerning exercising the Q RPT and dwell time at pressure points Verification of Premium Class Q RPTs When verifying as opposed to calibrating a Premium Q RPT it is not necessary to include the higher density of points that is recommended for determination of the calibration coefficients 5 points up 2 points down 50 low point run is adequate To verify that the uncertainty turndown with AutoRange see Sections 3 3 4 1 2 2 1 is in tolerance it is recommended that the verification of a Premium Q RPT include verification of an AutoRanged span of 30 96 of the maximum Q RPT span For example verify an A7M Q RPT in the default range of 0 t
13. O PURPOSE To CLOSE SDS on all reference pressure transducers Q RPTs To OPEN SDS on the active Q RPT s SDS is present only Q RPTs designated A7M or lower 505 key should be used with care to avoid accidentally overpressuring Q RPT Always double check to ensure that the pressure applied to the Q RPT s TEST port is lower than the Q RPT s maximum pressure before OPENING SDS SDS be set to permanently be OPEN if SDS were installed see Section 3 5 4 2 Page 43 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL O PRINCIPLE SDS is a self defense system to protect RPM4 Q RPTs from overpressure SDS CLOSES automatically to protect a Q RPT that is not active In a two Q RPT RPMA activating one Q RPT automatically CLOSES SDS on the other Q RPT Powering down the RPM4 or energizing it also CLOSES SDS on all Q RPTs When a Q RPT s module s SDS is CLOSED the Q RPT is isolated from the TEST port and opened to the VENT port SDS must be OPENED for the pressure applied to the TEST port to be measured The SDS key is used to OPEN SDS The SDS function can also be used to CLOSE SDS as might be desired when leaving RPM4 at rest or when a possible overpressure situation is anticipated Pressing SDS always CLOSES any SDS systems that are OPEN See Section 3 2 7 for general information SDS and ite principles and Section 5 6 Figure amp for Q RPT
14. See Also Section 3 5 4 1 Reset Sets 2004 2007 DH Instruments a Fluke Company Page 112 4 REMOTE OPERATION SRE Purpose Read or set the Service Request Enable Register Command n Query xSRE Default 0 Arguments n 0010255 This is the decimal representation of the bit s to enable To allow the MAV and ESB bits to assert the SRQ line the argument would be 32 16 48 Bit 6 64 is reserved and cannot be set Remarks The Service Request Enable Register determines which bits of the Status Byte can set the MSS bit of the Status Byte and request service by asserting the SRQ line of the IEEE 488 interface Example Sent SRE 48 enables the and ESB bits enhanced Query reply 48 no reply if IEEE 488 Errors ERR 6 nis not valid STB Purpose Read the Status Byte Register Command Remarks The Status Byte Register reflects the general status of the RPM4 The MSS bit state is represented by bit 6 Example Sent Reply 80 The 55 and bits are set TST Purpose Read the power on self test status Query TST Remarks The RPM4 system memory stores the user settings units resolution and retains them when the unit if OFF On power up this memory is checked If this memory is corrupted all user sett
15. This is followed by the current pressure unit Not all RPM4s are equipped with an on board barometer This field is missing if the RPM4 is not equipped with an on board barometer Example Query sent PRR enhanced Query reply R 2306 265 kPaa 0 011 kPa s 97 000 kPa a R 2306 265 kPaa 0 011 kPa s no barometer Example Query sent PRR classic Reply R 2306 265 kPaa 0 011 kPa s 97 000 kPa a See Also PR QPRR SR 3 1 1 3 2 1 3 5 7 1 QPRR Purpose Read the last Q RPT pressure measurement pressure rate and on board barometer output immediately Query QPRR Classic Optional Suffix n The active Q RPT is assumed if no suffix is given Specify the Hi Q RPT if the Hi and Lo Q RPTs are NOT OFF Specify the HL Q RPT if the Hi and Lo Q RPTs are OFF 2 Specify the Lo Q RPT 7 Specify the HL Q RPT if the HL Q RPT is active Remarks The last measured Heady Not Ready condition active Q RPT pressure measurement rate of pressure change and barometric pressure is replied in the current pressure unit of measure immediately This program message is useful when a rapid response of measured pressure is needed It does not result in quicker pressure measurements Each data field is separated by a comma and is returned in the following order Ready pressure UNITS rate UNITS s atm UNITS Here are the field descriptions ready Three character ready status field Refer to
16. 80 bytes deep If you overflow the buffer by sending too much data the data will be lost Because of this you must send a single program message at a time and you must wait for the RPM4 to reply from the previous command before issuing another command Table 14 COM Pin Designations and Connections RPM4 COM1 DB 9F PIN DESIGNATIONS ewe FUNTION IBM PC XT DB 9F IBM PC XT DB 9M TO RPM4 DB9F CONNECTIONS CONNECTION Page 81 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL 42 12 IEEE 488 The RPM4 488 interface is located on the back of the unit The physical and electrical interface conforms to IEEE Std 488 1 1987 Subset E2 and IEEE Std 488 2 1992 You should not attempt to communicate with the IEEE 488 interface while using the COM1 interface The IEEE 488 receive buffer is 250 bytes deep If you attempt to overflow the buffer the RPM4 will hold off release of the NRFD handshake line until it can service and empty the receive buffer This keeps the buffer from overflowing It is recommended that you check for errors using the ERR query after sending a group of non query program messages When using queries ensure that you wait for a reply to each query to ensue proper operation and order of command execution Replies to queries remain in the reply queue until the host gets them so they can stack up causing replies to appear out of sequence 4213
17. Enabled events in this register will set or clear the ESB bit of the Status Byte Register Table 19 8 Bit Standard Event Register PON URQ CMD EXE DDE QYE RQC OPC 128 64 32 16 8 4 2 1 This register can be read using the ESR query Each of these status bits can set the ESB bit of the Status Byte Register causing a SRQ to occur IF the ESB bit is enabled to do so The Standard Event Status Enable Register program message determines which of these flags are able to assert the ESB bit The description of these bits are given as PON Power On Bit 7 128 Indicates that the RPM4 power has been cycled since the last time this bit was read or cleared URQ User Request Bit 6 64 Indicates that the RPM4 was set to local operation manually from the front panel by the user pressing the ESC key CMD Command Error Bit 5 32 Indicates that a remote command error has occurred A command error is typically a syntax error in the use of a correct program message EXE Execution Error Bit 4 16 Indicates if a remote program message cannot be processed due to device related condition DDE Device Dependent Error Bit 3 8 Indicates that an internal error has occurred in the 4 such as a transducer time out QYE Query Error Bit 2 4 Indicates that an error has occurred in the protocol for program message communications This is typically caused by a program message being sent to
18. PCAL1 2 1 1 000021 20011201 classic Reply 2 10 Pa 1 000021 20011201 Errors ERR 6 One of the arguments is out of range ERR 10 The suffix is invalid See Also 5 2 PRn Purpose Read the next available pressure measurement Query PRn Classic Optional Suffix n The active Q RPT is assumed if no suffix is given 47 Specify the Hi Q RPT if the Hi and Lo Q RPTs are NOT OFF Specify the HL Q RPT if the Hi and Lo Q RPTs are OFF 2 Specify the Lo Q RPT Specify the HL Q RPT if the HL Q RPT is active Remarks The next available pressure value for the specified or active Q RPT is read in the current pressure units The data returned also contains Ready Not Ready information and the pressure unit of measure and measurement mode The reply field is always 20 characters long The first 3 characters of the reply are reserved for the ready status The ready status is described in the SR program message The pressure value and pressure unit of measure are right justified in this field After receiving this program message the RPM4 replies back with the data after a new pressure measurement cycle is complete This can take up to the current read rate period 1 2 seconds by default Example Query sent PR enhanced Query reply R 1936 72 kPa a Example Query sent PR classic Reply 1936 72 kPa a See Also SR ABORT READRATE 3
19. Placing the query operator immediately after the command creates a query You must wait for a reply with a query If you send any type of program message to the RPM4 after a query before receiving a reply the program message is discarded and an error is generated Errors are reported using the IEEE Std 488 2 status reporting model A Query program message always ends with a question mark Most queries return a reply within 200 ms except PR PRR SR ATM RATE Up to 2 seconds RPT ARANGE AUTOZERO RUN Up to 3 seconds The syntax for using a QUERY program message is listed next to the keyword Query in each program message summary in Section 4 4 4 Please note that queries in enhanced mode via the IEEE 488 port that results in an error will not result in a reply You must check the error queue use the ERR querie to see if an error has occurred 2004 2007 DH Instruments a Fluke Company Page 84 4 4 4 REMOTE OPERATION COMMANDS 4 4 1 PROGRAMMING MESSAGES Some commands accept an optional suffix This suffix can be used to specify the explicit Q RPT to address In most cases each Q RPT in the RPM4 operates as an independent measurement device If the suffix is not specified then the Active Q RPT is assumed The RANGE or ARANGE command can be used to select the Active Q RPT There are some limitations to use of the suffix when the RPM4 is
20. The DISPLAY selection is NOT range specific DISPLAY selection made in one range applies to all ranges The default DISPLAY function is Rate which causes the second line of the display to show R followed by the current rate of change of pressure in current pressure units per second The default DISPLAY function in differential mode is RPT Page 35 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL When RPM4 is initialized as an external device to PPC3 pressure controller the RPM4 front panel keypad is locked out and the second line of the display becomes lt PPC3 EXT DEV IDLE gt if RPM4 is initialized by PPC3 but not currently in use lt PPC3 EXT DEV ACTIVE if RPM4 is initialized by PPC3 and is currently in use After using an RPM4 as an external device for a PPC3 cycle power to return to the previous RPM4 settings restore front keypad capability and return to the normal main run screen 3361 AVERAGE PURPOSE To activate the Average DISPLAY and or adjust the period of time over which averaging occurs See Section 3 3 6 Principle OPERATION To access the Average DISPLAY press DISPLAY lt 1Avg gt The display is Averaging Period 1 Edit field for averaging period in seconds 20 s Default is 20 Minimum 1 maximum 999 Edit the averaging time period if desired Pressing ENT returns to the main run screen with the Average DISPLAY
21. a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL 7 2 UNIT CONVERSION 7 2 1 PRESSURE RPM4 performs all internal calculations in SI units Numerical values input or output in other units are converted to SI immediately after entry and back to other units just before output as needed Table 28 provides the conversion coefficients used by RPM4 to convert numerical values expressed in SI units to corresponding values expressed in other units Table 28 Pressure Unit of Measure Conversion Coefficients Pa rase o O o CO a mr pound per square fot iore Altitude Note Quantities expressed in units of altitude follow MIL STD 859A Static Pressure p in Inches of Mercury for Values of Pressure Altitude H in Geopotential Feet MIL STD 859A provides tables of pressure in inches of mercury as a function of altitude in feet RPM4 uses a set of equations to model the pressure altitude relationship The worst case deviation between the MIL STD 859A table and the calculated pressure is 0 0001 inches of mercury 0 3 Pa The pressure quantity expressed in inches of mercury is converted to Pascal following Table 28 above For altitude expressed in meters meters are converted to feet using 1 m 3 28084 ft 2004 2007 DH Instruments a Fluke Company Page 136 8 WARRANTY Instruments Fluke Company 0 WARRANTY 8 1 OVERVIEW Except to the extent limited or otherwise provided herein DH Instruments wa
22. e Applying pressures with a calibration standard and recording the pressures measured by RPM4 e Calculating new PA and PM values and entering them e Setting to Zero for Q RPTs Before proceeding to calibrate a reference pressure transducer without using CalTool for RPTs software Sections 5 2 Calibration of Reference Pressure Transducers 5 2 1 O PRINCIPLE 5 2 2 Equipment Required 5 2 5 Setup and Preparation should be reviewed thoroughly we The Q RPTs of RPM4s used in parallel measurement mode must be adjusted separately PA and PM for the Hi and Lo Q RPT need to be determined and set individually Therefore data to be used in determining calibration coefficiente cannot be taken in parallel mode see Section 3 5 7 3 O OPERATION The typical procedure for calibrating a Q RPT is Set up and prepare the for calibration see Sections 5 2 2 5 2 3 Use the RANGE function key to select the Q RPT to be calibrated see Section 3 3 1 Be sure to set the DF range not an AutoRanged range Use HEAD to set the HEAD to zero see Section 3 3 7 Use UNIT to set the desired pressure unit of measure see Section 3 3 2 Use MODE to set the desired pressure measurement mode see Section 3 3 3 Axxx absolute Q RPTs that will be used in gauge measurement mode only may be calibrated in gauge measurement mode with a gauge pressure standard see Section 5 2 5 Use SPECIAL lt 1AutoZ gt to acces
23. gauge compound gauge and differential measurement modes RPM4 can be integrated into a PPC3 Pressure Controller Calibrator System to serve the PPC3 s external pressure measuring reference see the PPC3 Operation and Maintenance Manual A special configuration of RPM4 designated RPM4 AD is available for air date altitude airspeed applications The RPM4 AD model has its own specific manual p n 550148 Page 1 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL 12 SPECIFICATIONS L2 1 GENERAL SPECIFICATIONS Power Requirements Operating Temperature Range Storage Temperature Range Vibration Ventilation Weight Dimensions Microprocessors Communication Ports Fuses Pressure Ranges Operating Medium 85 to 264 VAC 50 60 Hz 25 VA max consumption and 12VDC 1 2A 15 to 35 C 20 to 70 C Meets MIL T 28800D To prevent product overheating provide proper ventilation 4 in clearance from rear panel cooling fan 5 kg 11 Ib approx varies slightly with number and type of Q RPT modules 10 cm H x 22 7 cm W x 24 cm D 3 9 in x 9 3 in x 9 5 in Motorola 68302 16 MHz RS232 COM1 COMO IEEE 488 2 1 A 250 VAC fuse 5 x 20 mm time lag type fuse Internal power supply fuse not replaceable by operator 2 5A 250 VAC One or two independent quartz reference pressure transducer Q RPT modules cover vacuum to 280 MPa 40 000 psi Any clean dry non corrosive gas
24. indication is never achieved Stability settings is too tight and or existing conditions will not allow Ready to be achieved Adjust stability setting or correct other conditions 3 4 3 3 2 1 Cannot select absolute or negative gauge measurement mode Q RPT is Gxxx and does not support absolute and gauge measurement modes or Operation is normal 3 3 3 Cannot select differential measurement mode RPMA must have two Q RPTs of the same type Axxx Gxxx BGxxx and the current range must be the default range DF of the Hi Q RPT for differential measurement mode to be available If RPM4 has two Q RPTs of the same type set the default range of the Hi Q RPT 3 3 3 1 Q RPT is Axxx absolute but cannot select absolute or negative gauge measurement mode Absolute and negative gauge measurement mode have been turned off in the calibration function Check that absolute negative gauge is ON for the Q RPT 5 2 5 Display update rate of indicated pressure changes when changing pressure RPM4 automated read rate function is ON to automatically adjust read rate depending upon rate of change of pressure Operation is normal Turn automated read rate function OFF if desired 3 5 7 2 Pressure is changing but display of pressure is NOT and the bottom right hand corner of the display is a numerical countdown followed by lt avg gt Average DISPLAY function is ON and pressure display is updating only
25. sent GPIB 21 enhanced Query reply 21 Example Sent GPIB 21 classic Reply 21 Errors ERR 6 The argument is not within given limits See Also 3 5 2 2 HEAD Purpose Read or set the fluid head settings Command HEAD height units fluid Query HEAD Classic HEAD height units fluid HEAD Defaults HEAD 0 cm 2 Arguments height The height of the test in relation to the RPM4 The value is positive if the test is above the RPM4 or negative if below the RPM4 The value can be between 9999 and 9999 Setting the value to 0 disables the head correction units The height units This must be in or cm gas The fluid type This must be N2 Air He Oil H2O or User Remarks The RPM4 can make a fluid head correction to allow it to display the pressure at a level other than the reference level of the RPM4 Example Cmd sent HEAD 10 in N2 enhanced Query reply 10 in N2 Example Sent HEAD 10 in N2 classic Reply 10 in N2 Errors ERR 2 The fluid text is too long ERR 6 The height is not within given limits or the unit is invalid ERR 7 The fluid text is invalid See Also 3 3 7 3 5 3 ID Purpose Read or set the user defined instrument identification label Command ID string Query ID Classic ID string D Arguments String An alphanumeric string up to 12 characters long Remarks The user defined ID label can be
26. the RPMA without reading a waiting reply RQC Request Control Bit 1 2 This bit is not supported as the RPM4 cannot become the active controller in charge OPC Operation Complete Bit O 1 Indicates that the RPM4 has completed all requested functions 4 5 4 READY STATUS REGISTER The RPM4 contains an 8 bit Ready Status Register that reflects specific RPM4 Q RPT measurement ready events Enabled events in this register will set or clear the RSB bit of the Status Byte Register Table 20 8 Bit Ready Status Register N A MEAS NRDY RDY N A MEAS NRDY RDY 128 LO LO LO 8 HI HI HI 64 32 16 4 2 1 2004 2007 DH Instruments Fluke Company Page 110 4 REMOTE OPERATION This register can be read using the RSR query Each of these status bits can set the RSB bit of the Status Byte Register causing a SRQ to occur IF the RSB bit is enabled to do so The Standard Event Status Enable Register RSE program message determines which of these flags are able to assert the RSB bit The description of these bits are given as MEAS LO Lo RPT measurement ready Bit 6 64 Indicates that the Hi Q RPT has completed a Q RPT measurement NRDY LO Lo Q RPT pressure Not Ready Bit 5 32 Indicates that the Hi Q RPT made a transition from Ready to Not Ready as defined by the stability settings see Section 3 2 1 RDY LO Lo Q RPT pressure Ready Bit 4 16 Indicates that the Hi Q RPT is Ready as defined by the stability s
27. 15 minutes before running AutoZ in absolute mode If running AutoZ results in value of Porse that is greater than 0 005 FS of the span of the Q RPT that is being AutoZeroed the Q RPT and or the reference used as the source of Posao may be out of tolerance or the AutoZ process may have been faulty Before activating a new Po greater than 0 005 FS of the active Q RPT check to be eure that both the Q RPT and the reference were in good working order properly vented to stable atmospheric pressure at the same height and reading in the same pressure unite when AutoZ was run 2004 2007 DH Instruments a Fluke Company Page 48 3 OPERATION When the run AutoZ selection is made if correction is currently active see Section 3 3 7 the head correction is momentarily disabled while running AutoZ to avoid zeroing out the head value The value of Poteet is always displayed and entered in Pascal Pa Run AutoZ by Entry AutoZ by entry allows the value of Pao see Section 3 5 1 PRINCIPLE to be entered directly from the RPM4 front panel This provides a simple way of AutoZeroing relative to an independent reference device such as a house barometer that does not interface directly with RPM4 To access run AutoZ by entry press AutoZ lt gt The display is 1 2 1 Real time pressure reading without head correction pressure unit of measure and measurement mode of the active Q RPT 96
28. 5 357 1 lt gt O PURPOSE To view the value of atmospheric pressure as measured by the RPM4 on board barometer There is on board barometer in RPM4 s that gauge internal Q RPTs only O PRINCIPLE RPM4 s that include Axxx absolute and or BGxxx bi directional gauge Q RPT are equipped with a separate on board barometer The atmospheric pressure measurements made by the on board barometer are used for dynamic compensation of atmospheric pressure when using an Axxx Q RPT to make gauge pressure measurements see Sections 3 3 3 PRINCIPLE and 3 2 2 and for static pressure compensation when using a G15K or BG15K Q RPT Section 5 5 Figure 7 and Section 5 6 Figure amp for photo schematice showing the position of the on board barometer in RPMA The on board barometer is a low accuracy sensor used only for measuring small changes in atmospheric pressure over short periods of time see Section 3 2 2 and for line pressure compensation when using a G15K or BG15K Q RPT RPM4 measurement uncertainty does not depend on the measurement uncertainty of the on board barometer Page 73 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL OPERATION RPM4 s that have only GIOOK or G200K Q RPTs G15K or BG15K are NOT equipped with an on board barometer To view the current reading of the on board barometer
29. 7755 kPa a Hi 2 Active Q RPT position designator Pstd 0 0 00000 0 0 3 Entry field for the value of Pstao in the current pressure unit of measure 3 Enter the value of the AutoZ reference Ps in the same unit of measure as the top line display and press ENT RPM4 logs the reading and calculates a new AutoZ offset value The next display is Press ENT to activate the new value of old P TEET Pottset Or ESC to start over with entry of a effset So new AutoZ reference Ps value New Porsset 8 3 Pa The value of Poteet is always in Pascal Pa The value of Pao is entered in the current pressure unit of measure Run AutoZ by COM2 AutoZ by COMe allows the value of Ps o see Section 3 5 1 Principle to be read automatically from a DHI RPMx connected to the RPM4 COM2 communications port The RPMx is read and the new is calculated automatically Page 49 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL To access run AutoZ by COM press AutoZ lt 2 2 gt The display is 1 2 1 Real time pressure reading without head correction pressure unit of measure and measurement mode of the active Q RPT 96 7755 kPa a Hi 2 Active Q RPT position designator Pstd 0 0 00000 0 0 3 Real time reading from the RPMx connected to RPM4 s COM2 communications port 3 Observe the displayed pressures and verify that they are stable When ready press ENT to cause Au
30. Gas operated Q RPT modules of A7M or less include the SDS Self Defense System see Section 3 2 7 to shut off the Q RPT from the TEST port If this function is not desired SDS can be turned full time off so that in regular operation SDS is not present With SDS full time off the SDS overpressure protection is still active See Section 3 5 4 2 for instructions on turning SDS full time off if desired 2 3 10 PARALLEL MEASUREMENT MODE If your RPM4 has two Q RPTs of the same type Axxx Gxxx BGxxx it supports parallel measurement mode in which both RPTs are used simultaneously to measure a common pressure statistically reducing uncertainty in the measurement Parallel measurement creates new Q RPT designated HL which is the combination of the Hi and Lo Q RPTs See Section 3 2 4 for complete information on parallel measurement mode Turn on parallel measurement mode if desired POWER UP AND VERIFICATION 241 SWITCH POWER ON Actuate the power switch on the RPMA rear panel if a 12 VDC power supply is already connected to the 12 VDC connection RPM4 power is already on Observe the front panel display as RPMA initializes error checks and goes to the MAIN RUN screen see Section 3 1 1 RPM4 default power up condition is Hi Q RPT active SDS closed if present If the RPMA fails to reach the MAIN RUN screen service is required Record the sequence of operations and displays observed If the RPM4 Q RPT module is equipp
31. RPTs or Axxx absolute Q RPTs in gauge measurement mode Pstao is always zero atmospheric pressure which is supplied by definition when the Q RPT is vented to atmosphere For RPM4s with two Q RPTs of the same type Axxx Gxxx BGxxx with the Hi Q RPT in differential measurement mode Peta is the pressure indicated by the Lo Q RPT when the Hi and Lo Q RPTs are connected to a common pressure 2 The pressure reading of the Q RPT with no AutoZ offset at the time AutoZ is performed 3 Pottsetc Pottset a Potisetp The difference between the reading of the Q RPT with no AutoZ offset Puo and the indication of the AutoZ reference Pstao for gauge c absolute 4 or differential p measurement mode Poftset Puo Psia o Pose represents the difference between the Q RPT reading Pu and the Autoz standard Pao The Autoz function manages the determination storage and application of Perse to correct the zero offset in absolute gauge and differential measurement modes When the Q RPT is calibrated is set to zero Pottset is then redetermined at regular intervals using the AutoZ function The most recent value of Persa is applied to the Q RPT reading to correct for change in zero 2004 2007 DH Instruments a Fluke Company Page 58 3 OPERATION The AutoZ function can be turned ON and OFF Table 7 summarizes the effect of AutoZ ON and OFF for the three Q RPT types in different measurement modes AutoZ in
32. Ready LED does not indicate whether the PPC3 pressure control is Ready 3 2 2 GAUGE AND NEGATIVE GAUGE MODES WITH AN ABSOLUTE Q RPT DYNAMIC COMPENSATION FOR ATMOSPHERIC PRESSURE Q RPTs with the designation Axxx are intrinsically absolute but they are also used for gauge and negative gauge measurement modes see Section 3 3 8 O PRINCIPLE Gauge measurement modes are achieved by subtracting the value of atmospheric pressure Perse from the Q RPT s absolute reading using AutoZ see Section 3 2 2 The AutoZ routine that measures Potiset s is run by pressing AutoZ whenever is in the vented condition This assures the continuous updating of the Perse value corresponding to atmospheric pressure Gauge pressure is the measured absolute pressure Py minus the atmospheric offset P gauge Pu However atmospheric pressure may change between opportunities to run AutoZ and update the value of Pottset a for example when running an extended test without venting RPM4 uses dynamic compensation for atmospheric pressure to correct for changes in atmospheric pressure between opportunities to run AutoZ and update Perses When Autoz runs and Pottseta is determined the reading of RPM4 s on board barometer Patmo is also recorded Later when no longer vented the change in atmospheric pressure APatm since Pottsea Was updated is the difference between the current barometer reading Pam and the barometer reading at
33. a device connected to the RPM4 2 port Classic xx Arguments XX The string to send out of the RPM4 2 port It must be less than 40 characters long Remarks The RPM4 2 port can be used to communicate to another RS232 device such as another RPM4 This allows the user to use a single COM port or IEEE 488 port on the host computer to communicate with the RPM4 and another RS232 device A carriage return and a line feed lt CR gt lt LF gt are added to the string After this program message is issued the RPM4 will reply back every string received by the RPM4 COM port that is terminated with a carriage return Line feeds are discarded This will discontinue when the next query is sent to the RPM4 There is no other reply from this program message Prior to using this program message you must ensure that the RPM4 COM2 port is correctly set up to communicate with the device on COM2 Refer to the COM2 program message Example Sent EVER classic Reply DH INSTRUMENTS INC RPM4 us A1000 A0015 Ver2 00 This example assumes that a second RPM4 s COM port is connected to the RPM4 2 port This example gets the version of the second RPM4 See Also COM2 3 5 2 ABORT Purpose Cancels any pending data requests by the PR PRR RATE SR or CONT commands Command ABORT Classic ABORT Remarks This program message is usually used to ensure the RPM4 is in an idle condition Example
34. absolute measurement mode with Axxx Q RPT Q RPTs with the designation Axxx are intrinsically absolute They have an evacuated and sealed reference Axxx Q RPTs can measure absolute pressure difference from vacuum In absolute measurement mode the source of Psta must be an absolute pressure nominally atmospheric pressure with uncertainty significantly better than that of the Q RPT that is being AutoZeroed For higher range Q RPTs this is easily accomplished with a variety of digital barometers or with a Lo Q RPT in the RPM4 For lower range Q RPTs a piston gauge or other standard may be required to provide Ps with low enough uncertainty When using an Axxx absolute Q RPT in absolute measurement mode with AutoZ ON absolute pressure is calculated as Pabs In absolute measurement mode running the AutoZ function to update the AutoZ value Pottset a iS initiated by the operator using AutoZ AutoZ in gauge and negative gauge measurement modes with an Q RPT dynamic compensation for atmospheric pressure Q RPTs with the designation Axxx are intrinsically absolute but they are also used in gauge and negative gauge measurement modes difference from atmosphere see Section 3 3 3 O PRINCIPLE Gauge measurement mode is achieved by subtracting the value of atmospheric pressure from the Q RPT s absolute reading using AutoZ and by dynamically compensating for changes in atmospheric pressure between oppor
35. active With the Average DISPLAY active the main run screen is 1 1 Average measured over last completed averaging period 2 Standard deviation of last completed 96 929 kPa Hi averaging period 5 0 0007 18Avg 3 Countdown in seconds until completion of on going averaging period The Average DISPLAY has a second screen that allows the instantaneous pressure readings to be viewed while an averaging cycle is running The instantaneous Average screen is 1 1 Instantaneous pressure values at RPM4 s normal update rate 2 Current rate of change of pressure in pressure 96 929 kPa a Hi units second R 0 0025 18Avg 3 Countdown in seconds until completion of on going averaging period 2 3 The key toggles between the main run Average screen and the instantaneous values Average screen 2004 2007 DH Instruments a Fluke Company Page 36 3 3 6 2 3 OPERATION Pressing ENT while in the Average DISPLAY aborts the current averaging period and causes a new one to begin ENT can thus be use to trigger a new averaging period on demand In the Average DISPLAY the Ready Not Ready indication applies to the result of the previous averaging period see Section 3 2 1 lt Ready gt indicates that all readings during the previous averaging period met the stability criterion lt Not Ready gt indicates that one or more readings were outside of the stability criterion Changing the pressure unit of meas
36. all the great features you might be missing get into the manuall Manual Conventions LN CAUTION is used in throughout the manual to identify user warnings and cautions NOTE is used throughout the manual to identify operating and applications advice and additional explanations indicates direct function keys e g RANGE lt gt indicates RPM4 screen displays e g lt 1yes gt Page VII 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL NOTES 2004 2007 DH Instruments a Fluke Company Page VIII 1 INTRODUCTION H DH Instruments A Fluke Company 1 INTRODUCTION 11 PRODUCT OVERVIEW RPM4 is a stand alone microprocessor driven reference pressure monitor intended to precisely measure gas or liquid pressure in a wide variety of pressure calibration measurement and testing applications It has been designed to provide very high performance and extensive features combined with maximum versatility and ease of use RPMA uses one or two quartz reference pressure transducer Q RPT modules and in some cases a barometer to measure pressure RPMA can be controlled locally by the operator using its front panel display and keypad or remotely by a computer using ASCII character command strings transmitted over its standard RS232 or IEEE 488 2 interface RPM4 models are available in ranges from as low as 3 to 3 kPa 0 4 psi to as high as 280 MPa 40 000 psi in absolute
37. an SRQ will occur if the MAV or the ERROR bit are set The description of these bits are given as OPER N A Bit 7 128 RQS Requested Service Bit 6 64 Indicates that the SRQ line of the 488 interface has been asserted by the RPMA This bit is cleared when a serial poll is performed on the and is part of the Status Byte Register when read using a serial poll This bit does not apply if the 1 port is being used MSS Master Summary Status Bit 6 64 Indicates that an event or events occurred that caused the RPM4 to request service from the Host much like the RQS bit Unlike the RQS bit itis READ ONLY and can be only cleared when the event s that caused the service request are cleared ESB Event Summary Bit 5 32 Indicates if an enabled bit in the Standard Event Status Register became set see Section 4 5 3 MAV Message Available Bit 4 16 Indicates that at least one reply message is waiting in the RPM4 IEEE 488 output queue ERROR Error Queue Not Empty Bit 2 4 Indicates that at least one command error message is waiting in the RPM4 IEEE 488 error message queue Use the ERR query to get this message RSR Ready Summary Bit 0 1 Indicates that an enabled bit in the Ready Status Register became set Page 109 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL 45 3 STANDARD EVENT REGISTER The RPMA contains an 8 bit Standard event register that reflects specific RPM4 events
38. and status reporting features of IEEE Std 488 2 The details of each format are covered in Section 4 3 SPECIAL lt 2remote gt lt 4format gt allows the remote program command syntax to be selected The cursor is on the active format Select 1classic or lt 2enhanced gt as desired Page 63 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL 35 24 lt SRS232 SELF TEST gt The RS232 self test is provided to check the RPM4 COM ports and the interface cable independently of an external device or computer If you are having difficulty communicating with RPM4 from a host computer using RS232 the RS232 self test can help establish that the RPM4 COM 1 port you are trying to communicate with and the interface cable you are using are good To run a self test of the RS232 ports COM1 and COM2 press SPECIAL lt 2remote gt lt 5RS232test gt The display prompts you to connect COM1 to COM2 using a standard pin to pin DB 9F to DB 9M RS232 cable see Section 4 2 1 1 4 2 1 3 Once the cable has been installed press ENT to run the self test The test is first executed in the COM1 COM2 direction and then the 2 gt direction If the 1 gt 2 test passes lt PASSED gt displays briefly and the test proceeds to COM2 gt COM1 If COM2 gt COM1 passes lt PASSED gt is displayed briefly followed by the conclusion lt The RS232 test has PASSED gt If a te
39. as a means of checking and quantifying the leaks that may be present in the system connected to the RPM4 s active Q RPT test port The principle of the LEAK CHECK function is the measurement of the natural decrease or increase of pressure in a fixed volume over time The LEAK CHECK function allows a leak check time to be set The total pressure change and the average rate of change over the leak check time are calculated and displayed In differential pressure measurement mode see Section 5 5 51 the leak check measurement is based on the measurement of the differential pressure O OPERATION To run a leak check first set the pressure to the desired leak check pressure Changing the pressure in test system causes adiabatic temperature changes the pressurized medium that need to have dissipated before a valid leak measurement can be made In general O 5 to 1 minute wait before running a leak check is adequate to allow the adiabatic temperature change to dissipate and valid leak measurements to be made However stabilization time may be much longer with liquid test media and as volume and pressure increases To access the LEAK CHECK function press LEAK CHECK from the MAIN RUN screen Select lt 1run gt to run a leak test The display is Set leak check time 1 Edit field for the time over which the leak rate will be 15 s determined in seconds 1 Edit the leak check time if desired minimum 1 maximum 999 sec
40. careful not to assume that the upper limit set in one measurement mode will apply to the other For example if you change the upper limit in gauge mode the upper limit will not be changed in negative gauge mode Upper limits are always specified and displayed in the current pressure unit except for altitude units When in altitude units upper limits are expressed in kPa if the altitude unit is meters m and psi if the altitude unit is feet ft In Hi Q PRT differential mode see Section 3 3 3 1 there are two UL values for the Hi Q RPT One is the upper and lower limts for differential pressure with a default value equal to the span of the Lo RPT The other is the UL on the base mode of the Hi Q RPT DF range to monitor the maximum pressure on the Hi Q RPT In differential mode the Lo Q UL is also active to provide monitoring of the differential mode line pressure 2004 2007 DH Instruments a Fluke Company Page 56 3 4 5 3 OPERATION 3441 OVER PRESSURE FUNCTION In addition to the UL function RPM4 has an over pressure function The over pressure function executes when a Q RPT measures a pressure that is 104 96 of its default span The G15K and BG15K Q RPTs also have a negative over pressure function The negative over pressure function executes when the Q RPT measures a pressure less than 17 5 kPa 2 3 psi The over pressure function causes the measured pressure display to flash If the Q RPT module is equi
41. choices for example to perform repeated identical calibrations under consistent conditions RPM4 is delivered with the security level set at low to avoid inadvertent altering of critical internal settings but with access to changing security levels unrestricted It is recommended that the low security level be maintained at all times If there is a risk of unauthorized changing of the security level changing authority should be password protected see O OPERATION of this section The security levels are structured to support typical levels of operation as shown in Table 8 Specifically the security levels prevent execution of the functions accessed by the key strokes marked by Page 69 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL Table 8 Security Levels FUNCTION MEDIUM RANGE ENT AutoTest UNIT MODE AutoRange LEAK CK DISPLAY HEAD SDS AutoZ in absolute mode SETUP SETUP lt 1range gt SETUP lt 2res gt SETUP lt 4UL gt SPECIAL SPECIAL lt 1AutoZ gt SPECIAL lt 1AutoZ gt lt 10n 1off gt SPECIAL lt 1AutoZ gt lt 3edit gt SPECIAL lt 2remote gt SPECIAL lt 2remote gt make changes SPECIAL lt 3head gt SPECIAL lt 4SDS gt SPECIAL lt 5pref gt lt 1ScrSvr gt SPECIAL lt 5pref gt lt 2sound gt SPECIAL lt 5pref gt lt 3time gt SPECIAL lt 5pref gt lt 3time gt make changes SPECIAL
42. command suffix See Also 55 3 4 3 Purpose Read or set the RPM4 internal clock Command TIME hh mmXXx Query TIME Classic TIME hh mmxx TIME Arguments hh mm The time in a 12 hour format using a colon delimiter XX am or pm Example sent TIME 12 52PM enhanced Query reply 12 52pm No reply if GPIB 488 Example sent TIME 12 52PM enhanced Query reply 12 52pm Example Sent TIME 12 52PM classic Reply 12 52pm Errors ERR 7 Missing or improper program message argument s See Also DATE 3 5 5 3 UCOEFn Purpose To identify the coefficient used to convert 1 Pascal to the current pressure unit of measure Query UCOEFn Classic UCOEFn Optional Suffix n The active Q RPT is assumed if no suffix is given 17 Specify the Hi Q RPT if the Hi and Lo Q RPTs are NOT OFF Specify the HL Q RPT if the Hi and Lo Q RPTs are OFF 2 Specify the Lo Q RPT 3 Specify the HL Q RPT if the HL Q RPT is active Remarks The RPM4 handles all pressure values internally in Pascal The coefficient replied is equivalent of 1 Pa in the current pressure unit of measure This program message allows the user to convert pressures Example Query sent UCOEF enhanced Query reply 0 0010000000 Example Sent UCOEF classic Reply 0 0010000000 See Also 3 3 2 8 5 6 7 2 1 Page 105 2004 2007 DH Instruments a Fluke Company
43. device failure ERR 28 Device failure ERR 29 Device not available ERR 30 Must be on range ERR 31 Exceeds upper or lower limit ERR 32 Not stable enough ERR 37 Data table is full ERR 38 Selected range is not available ERR 39 Data verify error ERR 45 Argument not allowed ERR 46 Argument cannot be negative ERR 52 Command obsolete ERR 53 Not Available 2004 2007 DH Instruments a Fluke Company Page 86 4 REMOTE OPERATION 4 4 3 PROGRAM MESSAGE DESCRIPTION OVERVIEW Each program message description is separated into the following sections Purpose A brief description of the programs message s function Command This is the Enhanced program message syntax to send data to the RPM4 or to execute an RPMA function The RPM4 must be set to use the enhanced format see Section 3 5 2 3 to use the syntax and style shown It may be sent alone or followed by at least one white space and additional argument s to show that arguments can be passed If there are multiple arguments then commas must separate them If you are using the IEEE 488 port multiple command type program messages can be sent in one message if you separate them with semicolon There will be no reply from the RPM4 using the IEEE 488 port unless the command is immediatel
44. entries Each log entry has two screens one with the event description and one with the even time and date Use and V to toggle between the two screens The oldest logged event appears After the last log has been viewed the option to clear the log 1no 2yes is presented Use 2yes to remove all entries from the log Use 1no to continue without altering the log To leave the log use ESC lt 8CAL gt PURPOSE To calibrate the RPM4 Hi and Lo Q RPTs and adjust the on board barometer These functions are considered part of RPM4 maintenance and are covered in the maintenance section of this manual see Sections 5 2 5 3 O PRINCIPLE See Sections 5 2 5 3 O OPERATION See Sections 5 2 5 3 Page 77 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL 3 5 9 9RESET O PURPOSE To reset various RPMA settings to default or factory values O PRINCIPLE RPM4 stores its user definable settings in non volatile memory The reset menu allows the user to selectively or completely reset these settings to factory defaults This clears any settings that the user has made and should be used only to restore the RPM4 to a known state RPM4 goes through its power up sequence after any type of reset is executed RPM4 reset functions will change current settings to factory defaults These may include settings vital to RPM4 operation and affecting the calibration of the quartz refe
45. full advantage of its many features and functions RPM4 AD is a special air data configuration of RPM4 which has ite own dedicated manual p n 550148 This manual is for all other configurations of RPM4 If your are using an RPM4 AD AD in front panel configuration window use the RPM4 AD Operation and Maintenance Manual p n 550148 Before using the manual take a moment to familiarize yourself with the Table of Contents structure Sections 1 2 and 3 should be read by all first time RPM4 users Section 3 is most important for those using the local front panel interface but should be read over by all users to familiarize themselves with general RPM4 operating principles Section 4 is for remote operation from an external computer Section 5 provides maintenance and calibration information Section 6 is a quick troubleshooting guide Use it to troubleshoot unexpected RPM4 behavior based on the symptom of that behavior Certain words and expressions have specific meaning as they pertain to RPM4 The Glossary Section 6 is useful as a quick reference for exact definition of specific words and expressions as they are used in the manual For those of you who don t read manuale go directly to Section 2 5 to set up your RPM4 and then go to Section 2 4 for power up and verification This will get you up and running quickly with a minimal risk of causing damage to yourself or your new RPM4 THEN when you have questions or start to wonder about
46. in determining calibration coefficiente cannot be taken in parallel mode see Section 3 5 7 3 Do not run a calibration with the HL parallel mode Q RPT active 2004 2007 DH Instruments a Fluke Company Page 118 5 MAINTENANCE ADJUSTMENTS AND CALIBRATIONS 5 2 4 RECOMMENDED CALIBRATION POINT SEQUENCE Calibration adjustments to RPM4 Q RPTs are made by altering calibration coefficients PA and PM see Section 5 2 1 1 To adjust these coefficients to optimum values giving the best results over the Q RPTs complete operating range specific calibration point sequences are recommended The recommended point sequence depends upon whether the Q RPT being calibrated is a Standard or Premium Class see Section 1 2 2 1 The class of the RPM4 Q RPTs is indicated in the model number on the product label and on the rear panel Q RPT label s for standard p for premium for example A7Ms or A7Mp Prior to running the calibration point sequence the Q RPT should be exercised by a Setting full scale pressure b Dwelling at full scale pressure for 5 minutes Returning to atmospheric pressure vented If the Q RPT is a gas operated Axxx type use vacuum rather than atmospheric pressure d Dwelling for twenty minutes A dwell time after setting the pressure of at least 60 seconds before taking data at each point is recommended Section 5 2 4 1 gives calibration point sequences for Standard Class Q RPTs and Section 5 2 4 2 gives calib
47. is The cursor is on the current state of SDS for the designated Q RPT Select lt 1close gt to close SDS lt 2 gt to open SDS and return to the MAIN RUN screen ESC to return without making changes SDS temporary Hi lclose 2open If lt 2 gt is selected and SDS for the Q RPT is not already open the SDS opening screen with indication of the maximum pressure of the Q RPT is displayed This is the same screen used when opening SDS using the SDS key see Section 3 3 8 Check that the pressure applied to the Q RPT module TEST port does not exceed the Pmax value before confirming that SDS should be opened Opening SDS with a pressure greater than Pmax applied to the test port may cause overpressure damage to the Q RPT Page 65 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL 3 5 5 3542 lt 2 TIME ONOFF gt OPERATION gt See Section 3 2 7 for complete information on RPM4 s SDS Self Defense System feature A Turning SDS full time OFF for a Q RPT module eliminates normal SDS operation so that the Q RPT module TEST port remains open However the SDS overpressure function see Section 3 4 4 1 remains active To turn SDS full time ON or OFF for a Q RPT module press SPECIAL lt 4SDS gt lt 2full time on off gt If the RPM4 has two Q RPTs and both have SDS the Q RPT must then be selected The next display is The cursor is on th
48. is none Remote software will time out waiting for a response from RPM4 However in R5252 communications there is always a response and the response MUST be read prior to issuing another command The COMMAND type of program message executes a process and can additionally send data to the RPM4 in the form of comma delimited arguments This data is usually a setting of some sort that is stored in the RPM4 If data is specified it must be preceded by at least one white space from the program message header and be within the range and format described in the program message description The keyword Command appears to the left of the required syntax in each program message description in Section 4 4 4 If you are using the IEEE 488 port the Command type does not generate a reply unless you place a query operator immediately after the command You also may send multiple program messages at once by separating each program message with a semicolon The commands are queued and executed in as received order after the entire message stream has been received so care in determining order of execution is needed If you are using the RS232 port COM1 the Command type will always generate a reply so you must wait for a reply before issuing another program message Because of this you can only send one Command program message at a time while using the COM 1 port Page 83 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTEN
49. less than the stability limit The user can set the stability limit see Section 3 4 3 The ready indication is often used when comparing the RPM4 and test device to indicate when a valid reading can be made In RPM4s with two Q RPTs the Ready Not Ready indication always applies to the active Q RPT whose pressure measurement is displayed on the top line of the RPM4 display When the inactive Q RPT measurement is displayed the second line using the display mode the Ready Not Ready indication for the inactive RPT is indicated by the leading character on the line X indicates Ready lt gt or lt gt indicate Not Ready pressure increasing or pressure decreasing The Ready Not Ready LED indications are Green Pressure Ready The pressure stability is within the stability limit Red Pressure Not Ready pressure stability is NOT within the stability limit 2004 2007 DH Instruments a Fluke Company Page 18 3 OPERATION In differential measurement mode see Section 5 5 51 the LED Ready Not Ready indication applies to the differential pressures In parallel measurement mode see Section 3 2 4 the LED Ready Not Ready indication applies to the average pressure read by the HL Q RPT When RPM4 is being used as an external measurement reference of a PPC3 pressure controller the Ready Not Ready indication is still based on the RPM4 stability and stability limit only The RPM4 s Ready Not
50. limit can be read and set as a percent of the full scale range of the Q RPT range Example Cmd sent SS 1 enhanced Query reply 0 10 No reply from GPIB 488 Example Cmd sent 859 4 enhanced Query reply 0 10 95 Example Sent SS 1 classic Reply 0 10 Errors ERR 6 The argument was invalid ERR 10 Invalid or missing command suffix See Also Ss 3 4 3 2004 2007 DH Instruments a Fluke Company Page 104 4 REMOTE OPERATION SSn Purpose Read or set the current pressure stability limit Command SS limit Query SS Classic SS limit Sg Optional Suffix ne The active Q RPT is assumed if no suffix is given 47 Specify the Hi Q RPT if the Hi and Lo Q RPTs are NOT OFF Specify the HL Q RPT if the Hi and Lo Q RPTs are OFF 2 Specify the Lo Q RPT 3 Specify the HL Q RPT if the HL Q RPT is active Arguments Limit The stability limit in the current pressure unit of measure Remarks The stability limit can be read and set as a pressure The stability limit is used as the Ready Not Ready criteria Example Cmd sent SS 1 enhanced Query reply 0 10 kPa s No reply from GPIB 488 Example sent SS 1 enhanced Query reply 0 10 kPa s Example Sent SS 1 classic Reply 0 10 kPa s Errors ERR 6 The argument was invalid ERR 10 Invalid or missing
51. module schematics gt SDS closed is indicated by lt 5 5 CLOSED flashing in the current measured pressure display field When SDS is closed the Q RPT is isolated from the TEST port and connected to the VENT port O OPERATION Though the SDS self defense system includes features to protect Q RPTs against overpressure SDS should NOT be considered a fail safe overpressure protection system SDS cannot guarantee that overpressure damage will NOT occur SDS closing automatically may protect an RPT in case of accidental overpressure but conventional measures for overpressure protection should always be used Damage to Q RPTs due to overpressure is NOT covered by the RPM4 product warranty even when SDS is present and ON The maximum pressure that should be applied to an RPM4 TEST port when SDS is CLOSED is 10 MPa 1 500 psi When SDS is CLOSED with a pressure applied a valve shuts isolating the Q RPT from the TEST port Another valve vents the Q RPT to atmosphere through the VENT port If the pressure applied at the time SDS is CLOSED is less than 1 700 kPa 250 psi the VENT valve will open causing sudden release of pressure through the VENT port and returning the Q RPT to atmospheric pressure If the pressure applied at the time SDS is CLOSED is greater than 1 700 kPa the VENT valve may NOT open In this case to vent pressure from the Q RPT module remove the pressure from the TEST port This will cause the SDS TEST port isol
52. or password see Section 3 5 5 5 2004 2007 DH Instruments a Fluke Company Page 66 3 OPERATION 3551 lt ISCRSR gt PURPOSE To adjust the idle time after which RPM4 s SCREEN SAVER activates O PRINCIPLE RPM4 has a SCREEN SAVER function which causes the display to dim after front panel key is NOT pressed for a certain amount of time The default is for the screen saver to activate after 10 idle minutes The screen saver activation time can be adjusted by the user or screen saving can be completely eliminated Setting screen saver time to zero eliminates the SCREEN SAVER function so that the display permanently remains at full brightness OPERATION To access the SCREEN SAVER function press SPECIAL lt 5prefs gt lt 1ScrSav gt Edit in minutes the idle time after which screen saver will activate to dim the screen Set the time to zero to eliminate the SCREEN SAVER function 3 5 5 2 lt 2SOUND gt PURPOSE To adjust or suppress the RPM4 valid key press sound PRINCIPLE RPM4 provides audible feedback by a brief beep when a valid key press is made The tone frequency of this beep may be selected from three choices or it may be completely suppressed Invalid key presses are indicated by a descending two tone blurp which cannot be suppressed OPERATION To access the keypad sound adjustment function press SPECIAL lt 5prefs gt lt 2sound gt Select between lt 2lo gt lt 3mi
53. port is for communicating with a host computer see Section 4 and 2 is reserved for communicating with an external device e g an RPMx a multimeter etc These ports settings can be viewed and changed using SPECIAL lt 2remote gt RPM4 has two remote communications formats classic and ENHANCED see Section 4 3 Which of these is active can be selected A self test is supplied for RS 232 communications The self test allows verification that the RPM4 RS232 ports COM1 and COM are operating properly and that a valid interface cable is being used 2004 2007 DH Instruments a Fluke Company Page 62 Q 3 OPERATION OPERATION To access the communications settings press SPECIAL lt 2Remote gt Select lt 1COM1 gt to view and edit COM1 settings see Section 3 5 2 1 Select lt 2COM2 gt to view and edit COM2 settings see Section 3 5 2 1 Select lt 3IEEE gt to view and edit IEEE 488 settings see Section 3 5 2 2 Select lt 4format gt to select the remote communications command format see Section 3 5 2 3 Select lt 5RS232test gt to run the COM1 and COM2 communications test see Section 3 5 2 4 352 1 lt 2COM2 gt ports be set for specific communications settings The settings are baud rate parity data bits and stop bits The available options are Baud 300 600 1 200 2 400 4 800 9 600 19 200 28 800 38 400 Parity ODD or Length 7o
54. relative to absolute zero or vacuum absolute mode M rement M 7 easurement Mode or relative to atmospheric pressure gauge mode Measurement mode in which the Q RPT indicates gauge pressure difference from atmospheric pressure in both positive and negative directions above and below atmosphere Negative gauge or compound gauge The difference between a Q RPT reading and the AutoZero reference at the time AutoZ is run Used by the AutoZ function when Auto Z is ON to compensate Q RPT readings for changes in zero over time AutoZero reference value Value indicated by the device against which the Q RPT is zeroed by AutoZ Pressure adder used to offset a Q RPT or barometer to calibrate it Page 139 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL PM Pressure multiplier used to adjust span of a Q RPT or barometer to calibrate it Operating mode of RPM4s with two Q RPTs in which both Q RPTs are used to measure ind Measurement together in parallel and the indicated pressure is the average of their readings This creates a pseudo Q RPT designated HL The maximum pressure limit of a Q RPT If the pressure measured by the Q RPT exceeds Pmax an overpressure condition occurs PPC3 Pressure controller calibrator manufactured by DHI RPM4 can be used as an external reference device fora PPC3 PPC3 automates RPM4 pressure control The transducer used by RPM4 for low uncertainty pressure
55. see Section 3 2 7 However it may be desirable to open the TEST port to atmosphere while measuring pressure and or without closing SDS For example this may be necessary to assure that the pressure on the low side of the Q RPT and the system under test does not move too far away from atmosphere SPECIAL lt 7internal gt lt 4lo vnt gt allows the TEST vent valve to be set to be permanently open permanently closed or to operate in its default automated condition It also allows the current status of the valve to be viewed OPERATION The normal default setting for the TEST vent valve ie lauto in which RPM4 automatically controle the valve based on current Q RPT module operation Setting other than lt lauto gt should only be selected by advanced users To access the LO VNT function press SPECIAL lt 7internal gt 4lo vent If the RPMA does not have gauge or BGxxx bi directional gauge Q RPT the display is Available with or BGxxx Q RPT only If the RPM4 has more than one Gxxx or BGxxx Q RPTs the Hi or Lo Q RPT must be selected Test vent lauto The next display is 2open 3close 4view Select 1auto for the TEST vent valve operation to be controlled automatically RPMA based on current operation This is the default and recommended setting Select lt 2 gt to cause the TEST valve to open and remain open regardless of RPM4 operation until the s
56. sent READYCK enhanced Query reply 1 if Q RPT condition has stayed Ready 0 if Q RPT condition has NOT stayed Heady Example Sent READYCK 1 classic Query reply READYCK 1 Example Sent READYCk classic Query reply READYCK 1 if Q RPT condition has stayed Ready READYCK 0 if Q RPT condition has NOT stayed Ready Errors ERR 6 Argument is not a 0 or a 1 See Also SR 3 2 1 2004 2007 DH Instruments a Fluke Company Page 100 4 REMOTE OPERATION REMOTE Purpose Lock out the front panel keypads during remote operation Command REMOTE Classic REMOTE Remarks The RPM4 goes into remote mode whenever communications take place The user return to local operation by pressing the ESC key The REMOTE program message locks out the front panel completely The only way to unlock the front panel after the REMOTE command is using the LOCAL program message the IEEE 488 GTL command or by cycling the RPM4 power Example sent REMOTE enhanced Reply REMOTE no reply if IEEE 488 Example sent REMOTE enhanced Reply REMOTE Example Sent REMOTE classic Reply REMOTE See Also LOCAL RESn Purpose To read or set the pressure display resolution for the active range Command RESn res Query RESm Classic RESn res
57. the SR command pressure The measured pressure for the selected Q RPT in the current pressure unit This is followed by the current pressure unit and measurement mode rate The measured rate of pressure change for the active Q RPT in the current unit of pressure per second This is followed by the current pressure unit atm The pressure measured by the RPM4 on board barometer in the current pressure unit but always absolute This is followed by the current pressure unit Not all RPM4s are equipped with an on board barometer This field is missing if the RPM4 is not equipped with a barometer Example Query sent QPRR enhanced Query reply R 2306 265 kPa a 0 011 kPa s 97 000 kPa a R 2306 265 kPa a 0 011 kPa s no barometer Example Query sent classic Reply R 2306 265 kPa 0 011 kPa s 97 000 kPa a See Also PR PRR SR 3 1 1 3 2 1 3 5 7 1 2004 2007 DH Instruments a Fluke Company Page 98 4 REMOTE OPERATION RANGE Purpose Change the active range to the default range of the Hi Lo or HL Q RPT Replies the active range full scale pressure unit and measurement mode Command RANGE Rng Query RANGE Classic RANGE Rng RANGE Default RANGE Rng for the Hi Q RPT IL for the Lo Q RPT HL for the HL Q RPT Remarks The active Q RPT must be selected before making changes to se
58. the Freeze value defaults back to zero To go to a DISPLAY other than Freeze press DISPLAY and make a new DISPLAY choice see Section 3 3 6 3 3 6 7 Clean O PURPOSE To activate the Clean DISPLAY See Section 3 3 6 Principle The AutoTest function see Section 3 3 10 to AutoRange RPM4 based on DUT characteristice and run an automated test sequence ie accessed by pressing ENT from the Rate run screen Page 41 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL O OPERATION To activate the Clean DISPLAY press DISPLAY lt 7Clean gt Pressing lt 7Clean gt returns to the main run screen with the Clean DISPLAY active With the Clean DISPLAY active the main run screen is 1 1 Conventional main run screen first line 99 135 psi a zHi 2 Clean second line go to DISPLAY other than Clean press DISPLAY and make new DISPLAY choice see Section 3 3 6 3 3 7 HEAD O PURPOSE To cause a pressure fluid head correction to be added to or subtracted from the pressure measured by the RPMA reference pressure transducer in order to predict the pressure at a height other than the RPM4 s reference level O PRINCIPLE RPM4 measures gauge or absolute pressure at the height of the rear panel TEST port Frequently when performing a calibration or test the device or system under test is at a different height than the RPM4 s TEST port This differenc
59. the time of AutoZ execution Pa o APatm Patm Patm o Dynamic compensation for atmospheric pressure uses APatm to correct the value of thus always compensating real time for changes in atmospheric pressure Pyauge APatm Gauge pressure measurement on an Axxx absolute Q RPT allows instantaneous switching between gauge and absolute measurements modes The additional uncertainty in gauge pressure mode due to the dynamic compensation for atmospheric pressure technique is a function of the resolution and short term stability of the on board barometer not its absolute measurement uncertainty This additional uncertainty is 1 Pa 0 00015 psi 3 2 3 MULTIPE RANGES Q RPTS AUTORANGE AND INFINITE RANGING An RPM4 may have one or two Q RPTs Position indication of the currently active Q RPT is continuously displayed in the upper right hand corner of the MAIN RUN screen and most other screens See Table 3 for position designation protocol for the Q RPTs in an RPM4 See Table 1 for a complete listing of RPM4 RPM4 Q RPT choices and their default ranges Page 19 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL Table 3 Position Designators of Q RPTs in an RPM4 System Q RPT POSITION DISPLAY SYMBOL Q RPT with highest maximum pressure installed in HIGH RPT position Q RPT with lower maximum pressure in dual Q RPT RPM4 installed in LOW RPT position Two
60. the user unit must be defined The display is Define user unit 1 Entry field 1 000000 unit Pa 1 Enter the number of user units per Pascal the entry field Pressing ENT defines the user unit and returns to the lt Set up unit n gt screen The user defined unit label can be customized to any alphanumeric four character label using the remote command UDU see Section 4 4 4 See Section 7 2 1 for the pressure unit conversion factors used by RPM4 2004 2007 DH Instruments a Fluke Company Page 72 3 5 7 3 OPERATION lt 7 gt PURPOSE To view set adjust and maintain various aspects of RPM4 s internal operation O OPERATION To access the internal selections press SPECIAL lbaro 2ReadRt 3RPT2x lt 7internal gt The display is 410 vnt 5log The INTERNAL menu choices include lt 1baro gt lt 2ReadRt gt lt 3RPT2x gt lt 4lo vnt gt lt 5log gt View the real time output of the on board barometer if present see Section 3 5 7 1 Turn ON and OFF RPM4 s automated rate of change dependent reading integration rate feature see Section 3 5 7 2 Enable and disable RPM4 parallel measurement mode in which two Q RPT modules are used to measure in parallel and their readings are averaged see Section 3 5 7 3 Operate Q RPT module Gxxx and BGxxx low VENT valve directly see Section 3 4 7 4 View the RPM4 incident log see Section 3 5 7
61. then it is not be affected by this command The status of the active Q RPT s SDS system is replied If the RPMA is in differential mode or the HL Q RPT is active then this command opens or close both the Hi and Lo SDS at the same time unless the SDS is full time off sent SDS 1 Query reply ul sent SDS 0 Query reply SDS 0 ERR 7 Argument not a 0 or a 1 ERR 10 Invalid suffix or command argument ERR 23 SDS not installed on this Q RPT SDSAUTO SDS 3 2 7 3 3 8 3 5 4 Read or set the automatic full time ON OFF status for the specified or active Q RPT SDS Systems This is equivalent to use of the SDS full time ON OFF function from the RPM4 front panel SDSAUTOn on SDSAUTOn SDSAUTOn on SDSAUTOn SDSAUTOn 1 Optional Suffix n The active Q RPT is assumed if no suffix is given If the HL Q RPT is the active Q RPT and no suffix is specified then the Hi Q RPT is assumed 1 Specify the Hi Q RPT SDS 7 Specify the Lo Q RPT SDS Arguments Example enhanced 0 to turn the SDS system OFF 1 to turn the SDS system Turning an SDS system to full time OFF or ON affects how the remote command SDSACT and the front panel SDS button can affect each Q RPT s SDS system sent SDSAUTO2 1 Query reply qe Cmd sent SDSAUTO1 0 classic Query reply SD
62. through the calibration information screens Allow abs and HI After viewing the values of PA and PM the display is neg g mode lyes 2no The cursor is on the number corresponding to the current selection Make the desired selection ino causes absolute and negative gauge modes to be unavailable for the Q RPT 5 2 06 QRPT CALIBRATION USING CALTOOL FOR RPTS SOFTWARE To calibrate RPM4 Q RPTs using CalTool software refer to Sections 5 2 1 O PRINCIPLE 5 2 2 and 5 2 3 in this manual and then refer to the CalTool for RPTs Software Manual CalTool for RPTs software and manual are supplied on the RPM4 General Accessories Disk and can be downloaded from www dhinstruments com 5 2 7 EDITING AND VIEWING Q RPT CALIBRATION INFORMATION O PURPOSE View and or edit Q RPT calibration information fields including calibration date This field is normally used to record the date on which the Q RPT is calibrated value of absolute mode AutoZero P Q RPTs only See Section 3 5 1 for complete AutoZero information This value is normally set to zero following absolute measurement mode calibration of an Axxx Q RPT The value of PA The pressure adder for the selected Q RPT see Sections 5 2 1 1 e The value of PM The pressure multiplier for the selected Q RPT see Sections 5 2 1 1 2004 2007 DH Instruments a Fluke Company Page 122 5 MAINTENANCE ADJUSTMENTS AND CALIBRATIONS e Absolute and neg
63. used to allow the user to tag the RPM4 with a unique identifier This ID is stored in non volatile memory and cannot be erased by a power failure system fault or reset The ID should not be changed frequently as the non volatile memory may fail after 100 000 write operations Example sent ID A01 enhanced Query reply RPM4 A01 No reply if GPIB 488 Example sent ID RPM4 A01 enhanced Query reply RPM4 A01 Example Sent ID RPM4 A01 classic Reply RPM4 A01 Errors ERR 2 Text argument is too long more than 12 characters See Also 3 5 5 4 Page 93 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL L2 L3 Purpose Read or set the type of program command format to use classic or enhanced Command L2 enables classic mode L3 enables enhanced mode Defaults L2 Classic mode Remarks The user can select the type of remote command format using these simplified commands There is no query format This format must agree with the format sent to the RPM4 This command is a replacement for the MSGFMT command Example sent L3 enhanced Query reply L3 No reply if IEEE 488 Example Sent L2 classic Reply L2 See Also MSGFMT 4 3 3 5 2 3 LLn Purpose Read or set the lower pressure limit f
64. very rapid overpressure or pressure exceeding 10 MPa 1 500 psi When an RPM4 is used as an external device to PPC3 pressure controller PPC3 controls the RPM4 s SDS to isolate the RPM4 Q RPTs from the test pressure when they are not in use IF the RPM4 SDS is full time off PPC3 changes it to ON The maximum pressure that should be applied to an RPM4 TEST port when SDS is CLOSED is 10 MPa 1 500 psi Though the SDS self defense system includes features to automatically protect Q RPTs against accidental overpressure SDS should NOT be considered a fail safe overpressure protection system SDS cannot guarantee that overpressure damage will NOT occur Conventional measures for overpressure protection should also always be used Damage to Q RPTs due to overpressure is NOT covered by the RPM4 product warranty even when SDS is present and ON 2004 2007 DH Instruments a Fluke Company Page 24 3 3 3 OPERATION 3 2 8 DIRECT FUNCTION KEYS SUMMARY Table 5 provides brief summary of direct function key operation It may be useful to keep a copy of this summary near the especially when first becoming acquainted with its operation Local operation of RPM4 is through the front panel keypad minimize multi layered menu structures the keypad numerical keys also provide direct access to the most commonly used functions The function accessed is labeled on the bottom half of the key Direct function keys are
65. with the average value at the end of each averaging cycle Go to a DISPLAY function other than average or press to get the instantaneous value Average DISPLAY 3 3 6 Display update of indicated pressure is too slow when pressure is changing quickly RPMA automated read rate function is OFF Turn automated read rate function ON to automatically adjust read rate depending on pressure rate of change 3 5 7 2 Pressure measurement seems erratic when measuring gas pressure The RPM4 and or the connection to the test System is contaminated with liquids Purge and clean affected systems Contact DHI Authorized Service Provider if RPMA is contaminated internally Table 29 Pressure indicated by RPM4 never becomes stable 2004 2007 DH Instruments a Fluke Company These is a leak in the pressure system to which RPM4 is connected Page 132 Find and correct leak Consider using RPM4 leak check function 3 3 5 SYMPTOM Disagreement between two Q RPTs in system appears excessive PROBABLE CAUSE Difference is actually within tolerance and acceptable disagreement 6 TROUBLESHOOTING SOLUTION Compare differences observed to tolerances on Q RPT measurements 1 2 2 1 Apparent inaccurate pressure control measure and little or no response from Q RPT Reference transducer destroyed by overpressure Contact DHI Authorized Service Provider Table 29 Apparent inaccurate pressu
66. 1 1 3 2 1 3 5 7 2 Page 97 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL PRR Purpose Read the next available Ready condition pressure measurement rate and on board barometer reading Query PRR Classic PRR Optional Suffix n The active Q RPT is assumed if no suffix is given 47 Specify the Hi Q RPT if the Hi and Lo Q RPTs are NOT OFF Specify the HL Q RPT if the Hi and Lo Q RPTs are OFF 2 Specify the Lo Q RPT 7 Specify the HL Q RPT if the HL Q RPT is active Remarks The next available Ready condition Q RPT pressure measurement rate of pressure change and barometric pressure is replied in the current pressure unit of measure This can take up to the current read rate period 1 2 seconds by default Each data field is separated by a comma and is returned in the following order ready pressure UNITS rate UNITS s atm UNITS Here are the field descriptions ready Three character ready status field Refer to the SR command pressure The measured pressure for the active Q RPT in the current pressure unit This is followed by the current pressure unit rate The measured rate of pressure change for the active Q RPT in the current pressure unit per second This is followed by the current pressure unit of measure atm The pressure measured by the RPM4 on board barometer in the current pressure unit and always absolute
67. 2 2 it is recommended that AutoZ be run the value of P ofise updated whenever vented in gauge mode whenever the line pressure is changed in differential mode and at least every 30 days or when RPM4 has been exposed to temperature changes exceeding 15 C 56 F in absolute mode O PRINCIPLE AutoZ Purpose and Principle The main component of the change over time of the RPM4 Q RPTs is change in zero or offset independent of span Offsetting or rezeroing RPM4 Q RPTs relative to a reference between recalibrations allows measurement uncertainty specifications to be maintained with less frequent full calibrations AutoZ is also used to compensate for the difference between the Hi and Lo Q RPT at the line pressure at which differential measurements are made The RPM4 AutoZero function AutoZ provides full on board support for the rezeroing process to simplify its application by the user The AutoZero function uses three values 1 Pstao The pressure value indicated by the AutoZ reference the device that is acting as the reference relative to which to offset the RPM4 Q RPT For Axxx absolute Q RPTs in absolute measurement mode the pressure at which AutoZ is performed is normally atmospheric pressure and the value can be supplied a by manual entry b automatically from a DHI RPMx connected to RPM4 COM2 communications port or c automatically from an Axxx Lo Q RPT if one is present in the RPM4 For Gxxx_or BGxxx gauge Q
68. 6 6 This function is useful to record the pressure present at the time of an operator observed trigger event for example when the needle of an analog gauge was on the nominal point or when a switch activates Blanks out the second line of the display see Section 3 3 6 7 This function is used when a simple display of pressure measured by the RPM4 active range without additional information is desired O OPERATION To set the DISPLAY function press DISPLAY from the main run screen The display is lavg 2rate 3dev 4RPT 5HiLo 6freeze 7clean The cursor is on the active DISPLAY function Selecting a display function returns to the main run screen with the selected function active Display menu choices include lt lavg gt lt 2rate gt lt 3dev gt lt 4RPT gt lt 5HiLo gt lt 6freeze gt lt 7clean gt Display average pressure and standard deviation Specify averaging time period see Section 3 3 6 1 Display pressure rate of change see Section 3 3 6 2 Display deviation of the measured pressure from a target value and specify the target value see Section 3 3 6 3 Display the pressure measured by the second Q RPT in RPM4s with two Q RPTs see Section 3 3 6 4 Display the maximum and minimum pressure observed since HiLo reset see Section 3 3 6 5 Capture and display the value measured when ENT is pressed see Section 3 3 6 6 Leave the second line of the display blank see Section 3 3 6 7
69. 7 Specify the Hi Q RPT if the Hi and Lo Q RPTs are NOT OFF Specify the HL Q RPT if the Hi and Lo Q RPTs are OFF 2 Specify the Lo Q RPT Specify the HL Q RPT if the HL Q RPT is active Remarks The current Heady status can be read using this program message Possible replies NR The pressure is not ready within the limits defined by the stability criterion R The pressure meets the ready criteria The status is replied when the next pressure measurement is finished OL The pressure of one of the active Q RPTs has exceeded the user defined upper or lower limits OP The pressure of one of the Q RPTs has exceeded the Q RPT s maximum limits ER An internal device failure has occurred Example Query sent SR enhanced Query reply NR Example Sent SR classic Reply NR See Also PRR HS SS UL LL Commands 3 2 1 3 4 4 3 4 4 1 SS n Purpose Read or set the current stability limit as a of range Command 55 limit Query 9 Classic 55 859 Optional Suffix n The active Q RPT is assumed if no suffix is given Specify the Hi Q RPT if the Hi and Lo Q RPTs are NOT OFF Specify the HL Q RPT if the Hi and Lo Q RPTs are OFF 2 Specify the Lo Q RPT 3 Specify the HL Q RPT if the HL Q RPT is active Arguments limit The stability limit in FS of the current active range Remarks The stability
70. 88 Example sent RESET enhanced Reply RESET Example Sent RESET classic Reply RESET See Also 3 5 9 1 Page 101 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL Purpose Optional Suffix Remarks enhanced classic Errors The active Q RPT is assumed if no suffix is given Specify the Hi Q RPT if the Hi and Lo Q RPTs are NOT OFF Specify the HL Q RPT if the Hi and Lo Q RPTs are OFF 2 Specify the Lo Q RPT 3 Specify the HL Q RPT if the HL Q RPT is active Up to two three including the HL Q RPT which is a combination of the Hi and Lo internal Q RPTs can be available for use in an RPM4 You can query the RPM4 for information about each particular Q RPT The Q RPT data is returned in the following format RPTLabel Q RPTLocator Serial RngGa RngAbs Q RPTMode RngLabel RPT type label This label identifies the Q RPT type and range This is the same label used on the RPM4 front panel screen RptLocator Text field identifying the Q RPT position in the RPM4 system identifies this as an internal Hi Q RPT IL identifies this as an internal Lo Q RPT Serial The serial number of the Q RPT RngGa The Q RPT default gauge mode range in the current pressure unit RngAbs The Q RPT default absolute mode range in the current pressure unit NONE appears in the field if the Q RPT is Gxxx BGxxx or Axxx with abso
71. AINTENANCE MANUAL Table 12 Reset Cal RESULT PA to zero PM to 1 SEE SECTION 5 2 1 1 5 2 7 Axxx Q RPT absolute and negative gauge mode ON 5 2 5 On board Barometer Calibration Coefficients PA to zero PM to 1 5 3 Calibration Date Set all dates to 19800101 AutoZ values Q RPTs All values to zero for absolute mode and 101325 Pa for gauge and negative gauge modes Gxxx BGxxx Q RPTs All Pas values to zero AutoZ function 3595 lt ALL gt O PURPOSE amp ON all Q RPTs all measurement modes information including critical calibration data The reset all function cleare and deletes large amounts of user defined Combines all resets in one global reset command that clears the entire user section of non volatile memory except the ID function see Section 3 5 5 4 and the security level password see Section 3 5 5 5 returning RPM4 to the as delivered condition The Reset All resets are itemized in Table 13 Reset Sets Table 13 Reset All RESULT All the resets of Reset Sets SEE SECTION Reset Units All the resets of Reset Units Reset Atest All the resets of Reset ATest Reset Cal All the resets of Reset Cal Remote Interfaces 1 COM2 and 88 interfaces to default settings Remote Communications Remote command format to Classic Level Security Reset securi
72. ANCE MANUAL Examples EEE 488 enhanced mode command series using query operator CLS Clear the error queue Wait for reply UNIT KPA Generates a reply User must wait for reply before continuing MMODE A Generates a reply User must wait for reply before continuing PR Generates a reply User must wait for reply before continuing EEE 488 enhanced mode commands without query operator CLS Clear the error queue No reply UNIT KPA No reply MMODE reply ERR Wait for reply User should use ERR query following a series of non query commands to check for errors that may have occurred EEE 488 enhanced mode multiple commands without query operator CLS Clear the error queue No reply UNIT KPA MMODE A Two command at once No reply ERR Wait for reply User should use ERR query following a series of non query commands to check for errors that may have occurred e enhanced mode command CLS or CLS Clear the error queue Wait for reply UNIT KPA or UNIT KPA Generates a reply User must wait for reply before continuing MMODE or MMODE Generates a reply User must wait for reply before continuing PR or PR Generates a reply User must wait for reply before continuing 4 3 22 USING QUERY TYPE COMMANDS The QUERY type of program message just requests data from the RPM4
73. BGxxx Q RPT only Command NVENTn mode Query NVENTn Classic NVENTn mode NVENTn Default NVENTn AUTO Optional Suffix n The active Q RPT is assumed if no suffix is given The Hi Q RPT is assumed if the HL Q RPT is active and no suffix is given 47 Specify the Hi Q RPT 2 Specify the Lo Q RPT Arguments Mode 0 to close the low vent valve 1 to open the low vent valve AUTO for the RPM4 to automatically open and close the low vent valve Remarks Gxxx or BGxxx Q RPTs each have a low vent valve that is used to vent the TEST port This valve is normally controlled automatically depending on current RPM4 operation but it can be commanded to open or close using the NVENT command The reply includes two fields The first indicates the low vent status The second indicates whether the low vent function is AUTO or MANUAL Example sent NVENT 0 enhanced Query reply 0 MANUAL Example sent NVENT AUTO enhanced Query reply 1 AUTO Example Sent NVENT 1 classic Query reply 0 MANUAL See Also 3 5 7 4 2004 2007 DH Instruments a Fluke Company Page 96 4 REMOTE OPERATION PCALn Purpose Read or set the calibration information for the Hi or Lo Q RPT Command PCALn adder mult CalDate Query PCALn Classic PCALn adder mult CalDate PCALn Defaults PCALn 0 0 1 0 19800101 Optional Suffix The active
74. D CALIBRATION OVERVIEW RPM4 was designed for maintenance free operation No maintenance is required other than e Regular AutoZeroing of quartz reference pressure transducer s Q RPT see Section 3 5 1 e Periodic calibration of Q RPT s see Section 5 2 e Adjustment of the on board barometer if present see Sections 5 3 This section provides information on maintenance adjustment and calibration procedures and recommended overhaul procedures 5 2 RPM4 is a sophisticated pressure measuring instrument with advanced on board features and functions Before assuming that unexpected behavior is caused by a system defect or breakdown use this manual and other training facilities to become thoroughly familiar with RPM4 operation For rapid assistance in specific situations see Chapter 6 for troubleshooting information RPM4 is covered by a limited one 1 year warranty Unauthorized service or repair during the warranty period is undertaken at the owner s risk and may cause damage that is not covered under warranty and or may void the warranty For warranty service contact a DHI Authorized Service Provide see Table 29 CALIBRATION OF QUARTZ REFERENCE PRESSURE TRANSDUCERS Q RPTS 5 2 1 PRINCIPLE RPM4 is equipped with or two quartz reference pressure transducers Q RPTs used for low uncertainty pressure measurement To calibrate a Q RPT pressures from a reference standard are applied to the Q RPT at ascending and
75. DH DH Instruments A Fluke Company RPM4 Reference Pressure Monitor Operation and Maintenance Manual 2004 2007 DH Instruments a Fluke Company High pressure liquids and gases are potentially hazardous Energy stored in these liquids and gases can be released unexpectedly and with extreme force High pressure systems should be assembled and operated only by personnel who have been instructed in proper safety practices This instrument is not to be operated in any other manner than that specified by the manufacturer 2004 2007 DH Instruments a Fluke Company All rights reserved Information in this document is subject to change without notice No part of this document may be reproduced or transmitted in any form or by any means electronic or mechanical for any purpose without the express written permission of DH Instruments 4765 East Beautiful Lane Phoenix AZ 85044 5318 USA DH Instruments makes sincere efforts to ensure accuracy and quality of its published materials however no warranty expressed or implied is provided DH Instruments disclaims any responsibility or liability for any direct or indirect damages resulting from the use of the information in this manual or products described in it Mention of any product or brand does not constitute an endorsement by DH Instruments of that product or brand This manual was originally composed in English and was subsequently translated into other languages The fidelity of the t
76. G 19 3 24 PARALLEL MEASUREMENT MODE mnnnne 21 3 25 USING RPM4 WITH PPC3 CONTROLLER CALIBRATOR mnnnnnnse 21 3 26 USE OF THE 12VDC BATTERY CHARGER PACK nnnnnnnse 23 3 27 505 SELF DEFENSE SYSTEM ee 3 2 8 DIRECT FUNCTION KEYS SUMMARY 3 3 DIRECT FUNCTION nannaa sanaram ananaianananainnananaasaiatananananainn nanana 3 3 1 3 3 2 UNIT 224 Ta A 3 3 3 1 3 3 4 AUTORANGE manne 3 3 5 LEAK CK EY 33 5 DISPLAY ae eni nt P LM A dde 3 3 6 1 UG AVENE ieee cux iUd M ut MM LEE E UNE 3 3 6 2 3 3 6 3 3 3 6 4 3 3 6 5 3 3 6 6 3 3 6 7 3 3 7 HEAD 3 3 8 505 SELF DEFENSE SYSTEM see ur 3 3 8 1 SDS DIFFERENTIAL AND PARALLEL MEASUREMENT MODES nr 46 339 2 HAUTOZ en Cae hah Rues es At ul ee te 46 3 3 9 1 AUTOZ IN GAUGE AND NEGATIVE GAUGE Hs BA 247 3 3 9 2 AUTOZ IN ABSOLUTE MODE nr H 8 89 8 AUTOZ N DIFFERENTIAL MODE A E 2451 3 3 10 ENT RUN AUTOTEST 51 34 SETUP centes 52 3 4 1 lt 1RANGE gt 3 4 1 1 SAVING AN AUTORANGE RANGE 3 4 1 2 DELETING AUTORANGE RANGES e si I 3 4 2 lt 2RES gt RESOLUTION snseses1212121 EX 3 4 3 3STABs 5 eu 54 3 4 4 lt 4UL gt UPPER LIMIT 55 3 4 4 1 OVER PRESSURE FUNCTION Ad 3 4 5 Eq lll pM c ht tons 3 5 S
77. M values previewing the results of the new calibration and activating the results of the new calibration see the CalTool for RPTs manual on the General Accessories Disk RPM4 also provides complete front panel and remote access to Q RPT calibration parameters so that Q RPT calibrations can be performed without using CalTool software see Section 5 2 8 5211 PAANDPMCOEFFICIENTS The coefficients used to adjust Q RPT readings are designated PA an adder or offset and PM a multiplier or span set The coefficients affect the Q RPT reading following Corrected reading uncorrected reading PM PA PA is expressed in units of pressure always the SI unit Pascal PM is dimensionless Each Q RPT has its own unique PA and PM values The PA and PM values currently in use can be viewed and edited from the front panel in the CAL function see Section 5 2 7 PA and PM values are automatically edited when CalTool software results are activated A As editing PA and PM values will change Q RPT calibration they should only be edited by qualified personnel as part of the calibration process Caution should be taken to avoid accidental editing and a security system is available to prevent access see Section 3 5 5 5 Incorrect editing of PA and PM values can cause out of tolerance measurements RPM4 is delivered with and PM values set to zero and 1 for all ranges This does not mean that the RPM4 has not been calibrated In th
78. N screen Leak check is range specific in the sense that leak check is using the active range However only one set of leak check results is maintained in memory and each leak test completed overwrites the memory View leak check always shows the results of the last leak check run regardless of the range that is now active The results screen includes the range indicator to indicate the range in which the leak check was run 3 3 6 DISPLAY O PURPOSE To select from a variety of choices the information that is displayed on the second line of the RPMA display O PRINCIPLE RPMA supports a variety of advanced pressure measurement functions that are displayed on the second bottom line of the RPM4 display In summary the available display functions included are AVERAGE Calculates the average pressure measurement over a user specified period of time and displays the average the standard deviation about the mean and a countdown in seconds to the next average see Section 3 3 6 1 This function is often used to filter out pressure noise in an unstable system The magnitude of the noise is quantified by the standard deviation about the mean A second Avg screen allows the instantaneous pressure values to be viewed during an averaging cycle RATE Calculates and displays the current rate of change of pressure in current pressure units second see Section 3 3 6 2 This function is a useful indication of the stability of the press
79. ND PARALLEL MEASUREMENT MODES A In differential and parallel measurement modes opening SDS opens SDS for BOTH the Hi and Lo Q RPTs Before opening SDS be certain that the pressure applied to both the Hi and Lo RPM4 TEST ports is less than the maximum pressure of the Lo Q RPT Differential see Section 3 3 3 1 and parallel measurement modes see Section 3 5 7 3 use two Q RPTs in one RPM4 to simultaneously In these modes function of the SDS key is adapted to facilitate operation using both Q RPTs simultaneously SDS can be used to OPEN SDS on both the active an inactive Q RPTs at the same time Pressing SDS always CLOSES any ON and OPEN SDS as it does in single Q RPT mode operation However if SDS is CLOSED for any and all modules equipped with SDS pressing SDS goes to the usual OPEN SDS routine which will OPEN SDS for both Q RPTs The display is 1 2 1 Maximum acceptable pressure of the Lo Q RPT always absolute on an Axxx Q RPT and gauge on a Gxxx Q RPT Pmax 350 kPaa HL 2 Position designator of active Q RPT HL in Open Hi amp Lo 1 2yes parallel mode lt in differential mode Check that the pressure applied to BOTH the TEST ports does NOT exceed the maximum acceptable value for the Lo Q RPT Select lt 1no gt to return to the main run screen without OPENING SDS select lt 2yes gt to OPEN SDS for both Q RPTs and return to the main run screen with SDS OPEN the active Q RPT open to th
80. PECIAL amp cal view 5 2 2 EQUIPMENT REQUIRED we The recommended calibration standards for RPM4 Q RPTs are DHI PG7000 piston gauges PG7102 PG7202 PG7601 for gas PG7302 for oil Contact DHI for additional information 5221 GAS OPERATED Q RPTS A10OM AND LOWER Gas operated piston gauge deadweight tester with the following characteristics e Measurement uncertainty of 0 0025 of reading for Standard Class Q RPTs or 0 002 of reading for Premium Class Q RPTs A standard with higher measurement uncertainty may be used but RPM4 measurement uncertainty may be degraded proportionally from published specifications e If the Q RPT is absolute and will be used in the absolute and or negative gauge measurement modes the reference must be able to apply absolute pressures Absolute pressures may be defined either by operation relative to an evacuated bell jar or for higher pressures by addition of atmospheric pressure measured by a suitable barometer Axxx absolute Q RPTs that will not be used in absolute or negative gauge measurement modes as is often the case for higher pressure Q RPTs do not require the application of absolute pressure for calibration and may be calibrated using a gauge pressure standard Axxx absolute Q RPTs calibrated in gauge measurement mode by applying gauge reference pressure values should be used in gauge mode only see Sections 3 3 3 O PRINCIPLE 5 2 5 e Able to supply the
81. PECIAL pM PE X 3 5 1 1AUTOZ 3 5 1 1 EDIT AUTOZ p 3 5 2 lt DREMOT ES nin E EMT a an a Sarai ene antenne 3 5 2 1 COM 26 OMA cT 3 5 2 2 lt 488 gt 3 5 2 3 lt 4FORMAT gt 3 5 2 4 lt 5RS232 SELF TEST gt Sis T 3 5 3 M SHEAD TEE AG eee eek 3 5 4 4509520 ED RD EET 3 5 4 1 1TEMP OPEN CLOSE gt 3 5 4 2 2FULL TIME ON OFFs zs 3 5 5 5PREFS E 66 3 5 5 1 1SCRSVR whe ss sree OF 3 5 5 2 lt 2SOUND gt enr 07 3 5 5 3 lt gt in Ss soif 3 5 5 4 RAIDS tiet 68 3 5 5 5 lt 5LEVEL gt SECURITY sas sir 08 3 5 6 6PUNIT 71 3 5 7 lt 7INTERNAL gt rA 3 5 7 1 1BARO se B 3 5 7 2 lt 2READRT gt Ind s sopore 3 5 7 3 3RPT2X i re man TD 3 5 7 4 lt 4LO VNT gt 2s shes sete o 3 5 7 5 lt 5100 m 3 5 8 8CAL 4 77 3 5 9 lt 9RESET gt 78 3 5 9 1 1SETS 22 uses 3 5 9 2 2 UNITS us 3 5 9 3 3ATEST m des secas 3 5 9 4 4 CAL 3 5 9 5 lt tr de in dr nr en nr A 80 2004 2007 DH Instruments a Fluke Company Page Il TABLE OF CONTENTS REMOTE OPERATION SN
82. PTIONS nn 112 MAINTENANCE ADJUSTMENTS AND CALIBRATION 115 BA OVERVIEW theta dud cud dp ML LU ARE 115 5 2 CALIBRATION OF QUARTZ REFERENCE PRESSURE TRANSDUCERS Q RPTS 115 5 9 PRINCIPLE von cy A Le A 115 5 2 1 1 PA AND PM COEFFICIENTS ete tentis s etre tet nee 116 5242 AS RECEIVED AND AS LEFT DATA iiec tete dede nde 116 5 2 2 EQUIPMENT REQUIRED nn 117 5 2 2 1 GAS OPERATED Q RPTS A10M AND LOWER ennui 117 5 2 22 OR GAS OPERATED Q RPTS A14M AND HIGHER mini 117 5 2 3 SET UP AND PREPARATION ctt ttti 118 5 24 RECOMMENDED CALIBRATION POINT SEQUENCE sssssssssssssssssssssssssssssscesssssssssssessseessssssssssseeseeeeees 119 5 2 4 1 STANDARD CLASS CAP TS acts bor i ne me clos t eR i Vu dri a UM LU 119 5242 PREMIUM CLASS Q RPTS iet tem c tta ect bte drca 120 5 2 5 TURNING OFF ABSOLUTE AND NEGATIVE GAUGE MEASUREMENT MODES FOR ABSOLUTE G BPIS2 Lea A 5 26 Q RPT CALIBRATION USING CALTOOL FOR RPTS SOFTWARE 527 EDITING AND VIEWING Q RPT CALIBRATION INFORMATION nn 5 28 CALIBRATION ADJUSTMENT WITHOUT CALTOOL FOR RPTS 124 5 3 ADJUSTMENT OF ON BOARD 125 5 4 RELOADING EMBEDDED SOFTWARE INTO FLASH MEMORY cssssscscssscsscssessessessesstss
83. Q RPT is assumed if no suffix is given The Hi Q RPT is assumed if the HL Q RPT is active and no suffix is given 47 Specify the Hi Q RPT 2 Specify the Lo Q RPT Arguments Adder The Q RPT calibration adder PA In Pascal Mult The Q RPT calibration multiplier PM from 0 1 to 100 CalDate The date of the calibration in the format YYYYMMDD by default Any other format up to 8 characters long is also accepted and the replied format is in th previously entered format Remarks The user defined pressure calibration information for the specified Q RPT Hi or Lo can be accessed with this program message The HL Q RPT does not have its own calibration information Using this program message overwrites the current calibration coefficients so caution must be used Changes made using this program message take effect immediately For compatibility with the obsolete style PPC3 PCAL HI and PCAL LO commands and LO can be used in place of the suffix n but this is not recommended for new applications Example sent PCAL2 2 1 1 000021 20011201 enhanced Query reply 2 10 Pa 1 000021 20011201 No reply if GPIB 488 Example sent PCAL 2 1 1 000021 20011201 enhanced Query reply 2 10 Pa 1 000021 20011201 Example sent PCAL HI 2 1 1 000021 20011201 style is OK enhanced Query reply 2 10 Pa 1 000021 20011201 Example Sent
84. Q RPT is not active and measurement mode is not differential 3 Specify the HL Q RPT if the HL Q RPT is active Arguments Unit The text corresponding to the pressure unit of measure A unit mode character can optionally be added to the end of the units a for absolute measurement mode g for gauge measurement mode n for negative gauge measurement mode d for differential measurement mode Hi Q RPT only ref The optional unit reference temperature only if the unit is InWa Remarks This program message determines what unit of measure and what measurement mode is used to display pressure values Refer to Table 13 for a detailed list of the units available and their labels If the unit text is not followed by an explicit mode character a g n or d then gauge mode is assumed There be a space between the unit text and the a g n or d If the unit specified is InWa an optional second argument ref can be set The ref can be 4 20 or 60 corresponding to InWa at 4 20 or 60 F If this second argument is not given when the unit is InWa then the reference temperature is assumed to be 20 C This can also be added directly onto the end of the Unit argument if desired The fifth character of the reply is always a for absolute mode g for gauge negative gauge mode or d for differential mode Whit
85. Q RPTs being used simultaneously HL in parallel measurement mode Hi Q RPT when used in differential Hd measurement mode The display symbol is included in the upper right hand corner of most RPM4 menu displays as a convenient indicator of the active Q RPT An RPM4 may have multiple ranges Each RPM4 Q RPT has a default range which is its maximum span Additional ranges lower than the Q RPT s maximum span may also be created using AutoRange see Section 3 3 4 Ranges created using are AutoRange temporary but may be saved with all their settings for reactivation see Section 3 4 1 AN range is identified by a range screen showing the Q RPT used by the range its current unit of measure and its full scale pressure in gauge and absolute if available measurement modes The range screen is 1 Q RPT designator 1 2 3 2 of range DF for the Q RPT s default range AR for a range created by AutoRange Active A700K DF Hi 3 Q RPT ition designator position designator p i 100g 100a 4 Current pressure unit of measure 5 Full scale pressure in current unit of measure in gauge lt g gt and or absolute a measurement mode depending on type of Q RPT and range 4 5 The ranges available on an RPM4 system are accessed using RANGE see Section 3 3 1 and or created using AutoRange see Section 3 3 4 Most settings made in an RPM4 range such as unit of measure measurement mode display resolution
86. ROMETER 5 intret sentia d ier rd a re eed eia Dente 4 1 2 3 BATTERY AND CHARGER 5 INSTALLATION ES nes per 7 2 1 UNPACKING AND INSPECTION in isninnnnmennnennennnnennnnenennennenensneennnnenennennnennnennnes 2 1 1 REMOVING FROM PACKAGING 2 1 2 I EdMnn 2 2 SITE REQUIREMENTS 2 3 SETUP LR ee 2 3 1 PREPARING FOR OPERATION iininrrnrnnnnenerenennnsnesnenenennannananeeneennsneneneenenennnnnanuns 8 2 3 2 FRONT AND REAR PANELS nrnrnrnesrenrnnennennananennennnsnnsnennenennnnananane eme ennsnenenene rene 8 2 3 2 1 FRONT PANE EET 8 2 3 2 2 FEAR PANEL MX 9 2 3 3 POWER CONNECTION mm Kien K saiia TRs 9 2 3 3 1 85 264 VAC 50 60 HZ VAC POWER iii 9 2 3 3 2 BATTERY PACK sees Hey eee Uy Db e E sE 9 2 3 4 REMOTE ENT CONNECTION FOOTSWITCH OR OTHER SWITCH 10 2 3 5 MEASURE PRESSURE TEST AND TEST PORTS 10 2 3 6 THE VENT 02 0 wel 2 3 7 CHECK SET SECURITY LEVEL esee wel 2 3 8 TURN OFF ABSOLUTE AND NEGATIVE GAUGE MODE RPT 12 2 3 9 SDS FULL TIME OFF 1 2 enses tenth aranesa sa a i
87. RPT HL HL Q RPT Remarks The ARANGE command is used to define an RPM4 range by specifying a desired unit of measure measurement mode and maximum pressure and have the RPM4 pick the best available Q RPT and make adjustments to optimize operation in that range The optional suffix or the RptLabel argument can be used to specify which Q RPT you wish to use for the AutoRange range instead of allowing the RPM4 to pick the best Q RPT By using this option you can override the internal logic that picks the most suitable Q Q RPT This Q RPT specified must be valid for the maximum pressure and measurement mode specified The reply indicates the current range data including the Q RPTLabel used for the range If inWa is specified for the unit the temperature reference can be given after the unit text inWa4 inWa20 or inWa60 corresponding to inWa at 4 C 20 C or 60 F If no number is given a default of 20 C is assumed There is no indication of the temperature reference in the reply If you just specify the Q RPT Label without any other arguments the Q RPT specified will become active in it s last range and settings The previously set unit and measurement mode for the Q RPT specified will become active Example Cmd sent ARANGE read the current range in the current units enhanced Query reply 100 00 psi A IH Example Cmd sent ARANGE read the current range in the current units classic Query rep
88. RPT with the Lo Q RPT displayed on the bottom display line see Section 3 8 6 4 This allows the line pressure Lo Q RPT indication to be viewed simultaneously with the differential pressure All other DISPLAY functions average rate deviation HiLo freeze apply to the differential pressure SDS key operation to OPEN SDS opens SDS of both the Hi and Lo Q RPTs simultaneously see Section 3 3 8 Overpressure is driven by the pressure range of the Lo Q RPT see Section 3 4 4 1 AutoZ manages zeroing of differential mode and is intended to tare the two Q RPTs at a common line pressure see Section 3 3 9 3 Switch to a mode other than differential for AutoZ functions of an individual Q RPT The leak check function uses the differential mode measurement see Section 3 3 5 The head function applies to the differential pressure see Section 3 3 7 Differential measurement mode is not available in AutoRange see Section 3 3 4 The UL limits apply to positive and negative differential pressure see Section 3 4 4 and the default is the maximum value of the differential pressure Both the Lo and Hi RPT base measurement mode ULs also remain active The Hi RPT UL provides a upper limit for the maximum pressure on the Hi side of the differential pressure Both the differential and base mode Hi RPT UL cause the display of differential pressure to flash when exceeded The Lo RPT UL provides an upper limit for the line pressure
89. Range Mode Set pressure measurement mode Operator specified during 3 3 3 absolute gauge negative gauge AutoRange Full scale Establish span maximum Operator specified during None AutoRange AutoRange span Basis of span based setting Absolute mode Zero absolute None calculations to AutoRange full scale Gauge mode Zero gauge to AutoRange full scale Negative gauge mode Minus atmosphere to AutoRange full scale negative equivalent of full scale on BG15K Q RPT Select most appropriate Q RPT Absolute and negative gauge to cover range and mode mode Axxx Q PRT with lowest default full scale that is greater than the AutoRange full scale Gauge mode Q RPT with lowest span whose full scale is greater than AutoRange full scale Gxxx over Axxx if spans are equal Upper limit Set maximum and minimum Upper limit 105 of operator Lower limit pressure alarm limits entered full scale pressure Lower limit None in absolute and gauge modes Minus atmosphere in negative gauge mode minus equivalent of upper limit in negative gauge mode on a BG15K Q RPT Minus 66 kPa 9 6 psi with BA100K Resolution Set display resolution 10 ppm of AutoRange span or 1 ppm of default Q RPT span whichever is larger Stability Limit Set Ready Not Ready stability 50 ppm of AutoRange span or 2 criterion ppm of default Q RPT span whichever is larger Q RPT turn down Turn down Q RPT See RPM4 pressure Premium class Q RPTs only characteriza
90. Range see Section 3 4 1 Adjust the resolution of pressure displays See Section 3 4 2 Adjust the pressure stability test that is the criterion for the Ready Not Ready indication see Section 3 3 3 Adjust upper and lower pressure limit alarms see Section 3 4 4 View data files resulting from running QDUT AutoTests See Section 3 4 5 3 4 1 lt IRANGE gt PURPOSE Save AutoRange ranges and associated settings for recall Delete previously saved AutoRange ranges O PRINCIPLE The RPM4 AutoRange function creates a range and automatically sets various operating parameters proportionally to the range see Section 3 3 4 Operating settings can then be changed by the user Many operating settings are specific to the current range see Table 4 SPECIAL lt 1range gt allows the AutoRange range and associated settings to be saved for recall using the RANGE key see Section 8 3 1 This can avoid having to recreate frequently used ranges and settings SPECIAL lt 1range gt is also used to delete ranges that have been saved but are no longer needed 34 L1 SAVING AN AUTORANGE RANGE O OPERATION To save a range created by AutoRange the range must be the active range Use AutoRange to create the range see Section 3 3 4 and then make desired feature and setting adjustments 2004 2007 DH Instruments a Fluke Company Page 52 3 OPERATION Once the AutoRange range is set up as desired press SETUP lt 1
91. S can be OPENED and CLOSED from the front panel using SDS SDS can also be controlled using functions under SPECIAL lt 4SDS gt The SDS temp open close function allows SDS on both Q RPTs whether active or inactive to be opened and closed directly see Section 3 5 4 1 The SDS full time on off function allows SDS to be opened permanently so the RPM4 be operated as if SDS were not installed see Section 3 5 4 2 SDS is normally used to isolate an RPM4 Q RPT from a test system which may sometimes be subjected to pressures higher than the Q RPTs maximum pressure When configuring a multi range system this can eliminate the need for external valving or connecting and disconnecting RPM4s For example two Q RPTs of different ranges might be connected to a single calibration system When the Hi Q RPT is in use SDS is closed on the Lo Q RPT to protect it from overpressure When used in this manner SDS should be CLOSED prior to applying pressure Automatic SDS closing in response to overpressure should only be used in an emergency overpressure situation SDS also attempts to protect Q RPTs from accidental overpressure Whenever RPM4 is powered ON it continuously monitors the pressure read by its Q RPT s If the pressure reaches the maximum pressure limit for a Q RPT SDS CLOSES to isolate the Q RPT from the TEST port and vent it to atmosphere see Section 3 4 4 1 This is not a fail safe overpressure system It does not protect against
92. SAUTO1 0 Errors ERR 7 Argument not a 0 or a 1 ERR 10 Invalid suffix p ERR 23 SDS not installed on this Q RPT See Also SDSACT SDS 327 534 354 SCRSAV Purpose Read or set the front panel display screen saver activation time Command SCRSAV nm Query SCRSAV Classic SCRSAV n SCRSAV Arguments n The inactivity period 0 99 minutes after which screen saver activates Default SCRSAV 10 Remarks The 4 front panel will dim after a period of keyboard and remote inactivity Setting this value to 0 disables this feature Example Cmd sent SCRSAV 30 enhanced Query reply 30 No reply if GPIB 488 Example Cmd sent SCRSAV 30 enhanced Query reply 30 Example Sent SCRSAV 30 classic Reply 30 Errors ERR 6 The argument was invalid See Also 3 5 5 1 Page 103 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL SN Purpose To read the serial number of the RPM4 Query SN Classic SN Remarks The RPM4 is serialized The serial number can be read using this program message Example Query sent SN enhanced Query reply 321 Example Sent SN classic Reply 321 See Also 3 5 5 4 SR Purpose Read the next available Ready Not Ready status Query SR Classic SR Optional Suffix n The active Q RPT is assumed if no suffix is given 4
93. TION BATTERY AND CHARGER PACK 100 to 240 VAC 50 60 Hz 15 W max consumption 0 to 50 C 20 to 50 C Meets MIL T 28800D 2 kg 4 4 Ib 8 cm H x 22 5 cm W x 20 cm D 3 1 in x 8 9 in x 7 9 in Nickel Metal Hydride 12 VDC Typical 9000 mAh Min 8200 mAh Full charge from empty 14 to 16 hours approx 8 to 12 hours Page 5 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL NOTES 2004 2007 DH Instruments a Fluke Company Page VI 2 1 2 INSTALLATION DH DH Instruments A Fluke Company INSTALLATION UNPACKING AND INSPECTION 211 REMOVING FROM PACKAGING RPM4 is delivered in a corrugated container with polyethylene inserts to hold it in place or in the optional molded medium density polyethylene shipping case with a custom foam insert for holding the RPM4 Remove the RPM4 and its accessories from the shipping container and remove each element from its protective plastic bag 2 12 INSPECTING CONTENTS Check that all items are present and have no visible damage A standard RPM4 includes all items indicated in Table 2 Table 2 RPM4 Packing List Page 7 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL 2 2 SITE REQUIREMENTS Install RPM4 on a flat stable surface at a convenient height The front feet can be extended so that the unit can be inclined for easier viewing The RPM4 can also be mounted in a standard 19 in
94. The AutoTest function see Section 3 3 10 is not available in differential measurement mode To automatically set up RPM4 to optimize its measurement characteristics and features for specific user specified range of operation O PRINCIPLE RPM4 is designed to support the calibration and test of a very wide variety of test ranges in various measurement modes 2004 2007 DH Instruments a Fluke Company Page 30 3 OPERATION The AutoRange function simplifies the task of selecting the Q RPT best suited to cover a specific test range and setting measurement parameters appropriately for the range These are set automatically based on operator entry of desired measurement mode pressure unit of measure and range full scale The selections and settings made by AutoRange are summarized in Table 6 A range set up using AutoRange and all its range specific settings may be saved for recall using SETUP lt 1range gt see Section 3 4 1 Saved ranges are available for later selection using RANGE see Section 3 3 1 If a range created by AutoRange is not saved it is overwritten by the next AutoRange or erased when another range is selected Press ENT from the main run screen in RATE mode to use the AutoTest function to AutoRange RPM4 based on DUT tolerance see Section 3 3 10 Table 6 Settings Made by AutoRange SETTING SELECTION PURPOSE SET TO SECTION Unit Set pressure unit of measure Operator specified during 3 3 2 Auto
95. Z When using an RPM4 with two Q RPTs in differential measurement mode with AutoZ differential pressure is calculated as Paitterentia Pui PLo Pottset D In differential measurement mode AutoZ is run when initiated by the operator pressing AutoZ when both Q RPTs of the RPM4 are connected to common pressure AutoZ ON OFF The AutoZ function can be turned ON and OFF separately for gauge absolute and differential measurement modes Table 7 summarizes the effect of AutoZ ON and OFF Table 7 AutoZ ON and OFF Q RPT MEASUREMENT AutoZ p AP aim SE TYPE MODE STATUS APPLIED APPLIED RUNS When initiated Absolute Not Applicable EXER operator Notavailable available Gauge or FE 2 When initiated negative gauge by operator When initiated Gauge or by operator negative gauge Not Applicable Not available in dual Q RPT Differential Not Applicable by operator RPM4 Not available Recommendations for the Use of the AutoZ Function The AutoZ function provides a powerful and easy to use tool for improving the stability over time of RPM4 Q RPTs and maximizing the recalibration interval by compensating for change in zero between full recalibrations In differential measurement mode it minimizes the uncertainty in the differential pressure due to the offset between the Hi and Lo Q RPTs at the 2004 2007 DH Instruments a Fluke Company Page 60 3 OPERATION ine pressure The following simple recommendations will he
96. able 18 8 Bit Status Byte Register OPER RQS MSS ESB MAV N A ERROR N A RSR 128 64 32 16 8 4 2 1 This register is affected by the RPM4 reply output queue the Error Queue the Standard Event Status register and the Ready Event Status register 2004 2007 DH Instruments a Fluke Company Page 108 4 REMOTE OPERATION Status Byte Register 5 SRE OPER RQS MSS Standard Event Status Register ESR or ESE n ESB PON URQ CMD EXE DDE QYE RQC OPC MAV 8 ERROR ERROR N A Ready Event Status Register RSR RSE n 1 RSR 1 The Status Byte Register can be read using the STB query or by performing a serial poll on the IEEE 488 bus If you read this using a serial poll then Bit 6 is the RQS If the STB query is used then bit 6 is the MSS bit All of the other bits are common to both types of query N A MEAS NDRY RDY N A MEAS NRDY RDY cee 128 LO 8 HI HI HI 64 32 16 4 2 1 Figure 6 Status Register Schematic Each of these status bits can cause a SRQ to occur The Service Request Enable Register SRE program message determines which of these flags are able to assert the SRQ line This enable register has a matching set of bits that each will enable the designated bit to cause a SRQ except for the RQS MSS bit s which cannot cause a SRQ f you set this register to 20 14 hex
97. active whenever RPM4 is in its MAIN RUN screen Table 5 summarizes the operation of the direct function keys Table 5 Summary of RPM4 Function Key Operation DIRECT FUNCTION KEYS ARE ACTIVE FROM THE MAIN RUN SCREEN See corresponding manual sections for full detail Adjust height of fluid head View active range and toggle correction Set to zero to defeat through available ranges ENT on correction a range activates it SDS controls the connection of Select pressure unit of measure for the Q RPT to the TEST port the active range Choice of units Close any open SDS Open SDS available in this menu can be of active Q RPT if closed customized Run the AutoZ function to Select the pressure measurement AutoZero the active Q RPT and mode for the active range absolute measurement mode gauge negative gauge differential Set up and optimize RPM4 features for a specific operating range and measurement mode Menu of less commonly used internal SPECIAL functions and settings Menu of commonly used setup features including save delete AutoRange ranges set display resolution set stability limit set upper lower view AutoTest data Run automated leak checking routine Start or set functions such as Leak Check AutoTest and Freeze ENTER values when editing Select the display function for the bottom line of the RPM4 display DIRECT FUNCTION KEYS 3 3 1 RANGE O PURPOSE To view and or change the active pressur
98. and stability setting are specific to the range Settings selected while one range is active apply to that range and not to other ranges The range specific settings are stored with the range and recalled whenever the range is made active This makes setting up ranges a convenient way to store and recall frequently used operating configurations See Table 4 for a listing of RPM4 adjustments and settings and whether they are range Q RPT or system specific 2004 2007 DH Instruments a Fluke Company Page 20 3 OPERATION Table 4 Settings and What They Are Specific To Range Measurement Mode Q RPT System Set pressure measurement mode absolute gauge negative gauge measure Upper Limit Set upper and lower pressure limit alarm Range and measurement mode AutoZ ON OFF set and view values Q RPT and measurement mode Screen Saver Set system user preferences System 3 5 5 Sound Time ID Level Set status of TEST vent valve if present omT RPT 3574 5 7 4 Various Q RPT and barometer calibration omer or barometer EM functions including turning off absolute and negative gauge modes 3 2 A PARALLEL MEASUREMENT MODE RPM4s equipped with two Q RPT modules of the same type Axxx Gxxx BGxxx can be set to operate in parallel measurement mode Parallel measurement mode is intended to improve measurement reliability and reduce measurement uncertainty by using the measurements of two Q RPTs together In parallel measurement m
99. asurement mode if desired 3 5 7 3 NOT reading pressure applied to the test port and SDS CLOSED is flashing over the pressure indication SDS is CLOSED for the active Q RPT so the pressure applied to the test port is NOT getting to the Q RPT After taking precautions to assure that pressure applied to test port is safe for the RPT OPEN SDS 3 2 7 3 3 8 Is NOT reading pressure applied to the TEST port RPM4 may have two TEST ports and the pressure to be measured is connected to the wrong Q RPT s port Familiarize yourself with your RPM4 configuration Connect pressure to be measured to correct TEST port 2 3 5 5 6 RPM4 may have two TEST ports and pressure to be measured is connected to correct port but active Q RPT is NOT the Q RPT on that TEST port Familiarize yourself with your RPM4 configuration Select active range to be on the Q RPT to which the pressure to be measured is corrected 5 6 3 3 1 SDS CLOSED is displayed alternating with the measured pressure SDS is CLOSED for the active Q RPT Operation is normal OPEN SDS if desired 3 3 8 SDS should be present on a Q RPT but does not seem to be active SDS has been turned full time OFF for the Q RPT Turn SDS full time ON 3 5 4 2 SDS will not OPEN for the Q RPT shown on the second line in the Q RPT DISPLAY function When not in differential or parallel measurement mode SDS on the inactive Q RPT can only
100. ation valve to open partially reducing pressure under 1700 kPa at which time the SDS VENT valve will open see Section 5 6 Figure 8 Pressing SDS always CLOSES SDS system that is OPEN In dual Q RPT RPM4 even if the active Q RPT has 505 pressing 505 CLOSES SDS for the inactive Q RPT if SDS is present 2004 2007 DH Instruments a Fluke Company Page 44 3 OPERATION Use SDS to OPEN SDS if it is CLOSED for the active Q RPT and or to CLOSE SDS for the active and inactive Q RPT When SDS is pressed there are three possible results depending whether the active Q RPT is SDS equipped and ON see Section 3 5 4 2 and whether its SDS is OPEN or CLOSED 1 Ifthe active Q RPT IS NOT SDS equipped or its SDS if full time OFF see Section 3 5 4 2 No SDS on RPT gt or SDS is OFF and OPEN is displayed for 5 seconds and operation returns to the main run screen If there is a second Q RPT with SDS its SDS is CLOSED 2 If the active RPT IS SDS EQUIPPED and SDS on the active RPT is OPEN SDS is CLOSED and operation returns to the main run screen 3 If the active RPT IS SDS EQUIPPED and SDS on the active RPT is CLOSED The OPEN SDS routine is presented The display is 1 2 1 Maximum acceptable pressure of active Q RPT always absolute on an Axxx Q RPT and gauge on Gxxx Q RPT 2 Position designator of Q RPT for which SDS will be Pmax 350 kPa a Hi opened Open SDS 1no 2yes Check that the pressure a
101. ative gauge measurement modes ON or OFF Axxx Q RPTs only See Section 3 3 3 O PRINCIPLE for complete information on measurement modes This is set to OFF if an Axxx Q RPT was calibrated in gauge mode with a gauge pressure standard O OPERATION As editing and PM values will change the calibration of the Q RPTs the edit function should only be used by qualified personnel as part of the calibration process Caution should be taken to avoid accidental editing A user level security system is available to control access see Section 3 5 5 5 A new is delivered with and PM values set to zero and 1 for all ranges This does not mean that the RPM4 has not been calibrated In the original factory calibration privileged factory coefficiente are used for calibration with the user PA and PM set to zero and 1 To access Q RPT calibration information viewing or editing press SPECIAL lt 8Cal gt Select the desired Q RPT The lt 1view gt selection displays the calibration information fields The lt 2edit gt function displays the fields and allows them to be edited The display is 1 2 1 Date of last calibration in YYYYMMDD format 2 Position designator of the Q RPT being viewed Cal date 20030325 Hi 3 Current value of absolute mode AbsPoffset 0 0 Pa This line is blank if the Q RPT is not an Axxx type t 3 If in edit mode the calibration information fields can be edited Edits to are common w
102. auge OFF calibration The current range cannot support gauge mode ERR 53 Gauge mode range would be negative Lo Q RPT not suitable for differential mode See Also UNIT ARANGE 3 3 3 Page 95 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL MSGFMT Purpose Read or set the type of program command format to use enhanced or classic Command MSGFMT mode Query MSGFMT Classic MSGFMT mode MSGFMT Arguments mode 1 to use the enhanced command format 0 to use the classic command format Defaults MSGFMT 0 Remarks The user can select the type of remote command format to use This format must agree with the format sent to the RPM4 The enhanced query form of this command MSGFMT n should always be used to set the desired format as it will be accepted regardless of the current format classic or enhanced It is recommended to use the L2 and L3 commands instead of this command for new designs Example sent MSGFMT 1 enhanced Query reply d No reply if IEEE 488 Example sent 5 1 enhanced Query reply 4 Example Sent MSGFMT 1 classic Reply MSGFMT 1 Errors ERR 6 Missing or improper program message argument s See Also L2 L3 4 3 3 5 2 3 NVENTn Purpose Read or set the status of low negative vent valve Gxxx or
103. barometric range whose low point is 70 kPa absolute 10 psi Page 3 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL Warm Up Time 30 minute temperature stabilization recommended from cold power up Resolution 1 ppm user adjustable Compensated Temperature Range 5 to 35 C Acceleration Affect 0 008 g maximum worst axis Allows operation at 20 from reference plane without significant effect Predicted One Year Stability 0 005 of reading all classes and types Q RPTs UP TO A10M 1500 psi STANDARD CLASS PREMIUM CLASS 6 0 005 of reading 0 001596 Precision 0 008 of reading or 0 005 2 0 0024 of Q RPT span alid eges d 0 000596 of Q RPT span whichever is greater 9 whichever is greater Measurement Uncertainty 0 01 of reading or 0 003096 0 008 of reading 0 002496 of Q RPT span whichever is of AutoRanged span or greater 0 000796 of Q RPT span whichever is greater Q RPTs A14M TO A140M 2 000 to 20 000 psi Precision 0 012 of reading or 0 0036 of Q RPT span whichever is greater Measurement Uncertainty t 0 013 of reading or 0 0039 of Q RPT span whichever is greater Q RPTs A200M TO A280M 30 000 to 40 000 psi Precision 0 015 of reading or 0 0045 of Q RPT span whichever is greater Measurement Uncertainty t 0 018 of reading or 0 0054 of Q RPT span whichever is greater 1 Predic
104. be OPENED using direct SDS control Use direct SDS direct control to OPEN SDS on the inactive Q RPT 3 5 4 1 SDS was left OPEN on one Q RPT when ranges were changed When you come back to it its CLOSED again When changing ranges causes a change of the active Q RPT SDS is always CLOSED for the Q RPT that becomes inactive Operation is normal 3 2 7 You would like to eliminate the SDS function for a Q RPT Set SDS to be inactive except for an overpressure situation Page 133 Turn SDS full time OFF for the Q RPT 3 5 4 2 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL NOTES 2004 2007 DH Instruments a Fluke Company Page 134 7 APPENDIX DH DH Instruments A Fluke Company 7 APPENDIX 7 1 REMOTE ENT The RPM4 remote ENTER function operates by detecting the open or closed status of the REMOTE ENTER switch The normal status of the ENTER switch is OPEN When RPM4 detects a CLOSED condition held for 300 ms it is interpreted as equivalent to a press of the ENT key Any switch may be used to accomplish the remote ENTER function The switch should be installed on the optional remote ENTER cable DHI P N 103128 Install the switch by connecting its two terminals to the black and white wires of the remote ENTER cable EX Figure 10 Remote ENT Connector Schematic 1 Black wire 2 White wire Page 135 2004 2007 DH Instruments
105. built in vacuum reference that is intrinsically absolute e g A10M Axxx Q RPTs support absolute gauge and negative gauge measurement modes 3 Absolute Mode Measurement mode in which the Q RPT indicates absolute pressure difference from vacuum The Q RPT that is currently selected to be displayed on the top line of the RPM4 Active Q RPT display Most function selections affect the active Q RPT A function that optimizes RPM4 measurement and control for a specific user defined AutoRange range of operation AutoRanged Range An RPM4 pressure measurement range created using the AutoRange function AutoTest or ATest RPM4 on board automated testing sequences and their results AutoZero or AutoZ A process by which a Q RPT and measurement mode is rezeroed offset relative to a standard Barometer 45 on board atmospheric pressure measuring sensor Also referred to as on board barometer A type of Q RPT that is intrinsically gauge and is capable of operating bi directionally above and below atmosphere through zero BGxxx Q RPTs support gauge and negative gauge measurement modes Default Range DF A Q RPT s maximum range that is always available using RANGE and cannot be deleted A DISPLAY function in which the deviation of the current pressure from a target pressure Deviation is displayed Device Under Test The device or devices pneumatically connected to the RPM4 TEST port that the RPMA is being used to test or calibra
106. cific settings of the Q RPT displayed in the lower display line measurement mode unit of measure resolution etc can only be changed by making that Q RPT active With the RPT DISPLAY active the main run screen is 1 2 Active RPT display Inactive RPT display with Ready Not Ready indicator on far left 1 99 1135 psi a zHi 2350 23 psi 4 zLo Page 39 2004 2007 DH Instruments Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL If the inactive RPT is equipped with SDS Self Defense System see Section 3 2 7 SDS will almost certainly be CLOSED when the RPT DISPLAY is activated SDS be OPENED on the inactive RPT using SPECIAL lt 4505 gt see Section 3 5 4 In differential or parallel measurement mode SDS can be opened simultaneously on both Q RPTs using SDS see Section 3 3 8 RPT DISPLAY is the default display differential measurement mode When the RPT display is active executing range change to range on the inactive Q RPT makes the inactive Q RPT the active Q RPT The DISPLAY defaults back to Rate Section 5 5 6 2 To go to a DISPLAY other than RPT press DISPLAY and make a new DISPLAY choice see Section 3 3 6 33 65 Hi Lo PURPOSE To activate the Hi Lo DISPLAY ell See Section 3 3 6 Principle OPERATION To activate the Hi Lo DISPLAY press DISPLAY lt 5Hi Lo gt Pressing lt 5Hi Lo gt resets the Hi Lo values and return
107. d Reply 20 the QYE and EXE bits are set IDN Purpose Identify the RPM4 version range and serial number Query x DN Remarks The identification reply is made up of the manufacture the model the serial number and the software version Each is separated by a comma Example Sent IDN enhanced Reply DH INSTRUMENTS INC RPM4 A0100 A0015 1234 Ver2 00 dhf OPC Purpose Sets the operation complete bit when all operations have completed Command Query Remarks This Command enables the RPM4 to set the OPC bit in the Standard Event Status Register when it has completed all pending functions The Query replies with a 1 when all functions are complete Example Sent Query reply 1 Reads the list of installed RPM4 options Query Remarks This Query returns any registered option s installed in the RPM4 Each option is separated by a comma Possible options 488 0 The 488 option is installed Example Sent Reply 488 0 RST Purpose Resets the RPM4 settings to factory settings Command Remarks This Command sets the RPMA settings to factory settings This equivalent to a front panel executed RESET SET This does not affect the communications settings Example Sent RST enhanced Reply no reply if IEEE 488
108. d gt or lt 4hi gt to adjust the valid key press tone frequency Select lt 1none gt to suppress the valid key press tone The sound function only affects the valid key press tone The invalid key press tone and other RPM4 sounds cannot be adjusted or suppressed 3553 lt STIME gt O PURPOSE To view and edit the RPMA internal time and date settings O OPERATION To access the TIME function press SPECIAL lt 5prefs gt lt 3time gt The display is Edit 1time 2date 08 32 11 am 20030125 Page 67 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL Select lt 1time gt to edit the time Edit hours then minutes then am pm by pressing ENT after each entry Seconds go to zero when minutes are entered This can be used to synchronize the time with a time standard Select 2date to edit the date The date must be specified in YYYYMMDD format The RPM4 date and time are set to United States Mountain Standard Time in the final test and inspection process at the factory desired use the TIME and DATE function to set your local time and date 355 4 AD gt PURPOSE To view or edit the RPM4 user ID and to view the RPM4 serial number O OPERATION To access the ID function press SPECIAL and select lt 5prefs gt lt 2ID gt Select lt 1view gt to view the current ID Select lt 2edit gt to edit the ID The ID has twelve characters When the edit screen is opened
109. de Page 121 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL 5 2 5 TURNING OFF ABSOLUTE AND NEGATIVE GAUGE MEASUREMENT MODES FOR AXXX ABSOLUTE Q RPTS O PURPOSE To prevent operation in absolute and negative gauge measurement modes on an Axxx absolute Q RPT that has been calibrated for gauge mode only O PRINCIPLE Axxx absolute Q RPTs are frequently used in gauge measurement mode only see Section 3 3 3 O PRINCIPLE Axxx Q RPTs that are used in gauge mode only may be calibrated in gauge mode with a reference that applies gauge pressures Calibration with an absolute reference is not necessary However if an Axxx Q RPT is calibrated in gauge mode it is not possible to know if it is in or out of tolerance in absolute and negative gauge modes To avoid using absolute and negative gauge measurement modes with Axxx Q RPT that is calibrated for gauge mode only access to absolute and negative gauge modes can be turned OFF This is accomplished in the SPECIAL lt 8cal gt menu O OPERATION See Section 5 2 7 for more detailed information on editing and viewing Q RPT calibration information Turning absolute and negative gauge mode operation ON and OFF for Q RPT occurs in the same area in which calibration coefficients are edited To access the Q RPT calibration editing area press SPECIAL lt 8cal gt and select the desired Q RPT Then select lt 1edit gt to make changes ENT
110. descending pressure increments over the range The recommended pressure sequence for a calibration varies depending on whether the Q RPT is of Standard or Premium class see Section 1 2 2 1 The pressure defined by the standard and the corresponding Q RPT readings are recorded at each point After all of the pressures have been applied and recorded adjustments are made to fit the Q RPT pressure readings to the standard Fitting the readings means performing a linear regression to arrive at the lowest value of the residuals of errors of the Q RPT relative to the standard The Q RPT output is adjusted by user settable coefficients PA an adder or offset and PM a multiplier or span Set see Section 5 2 1 1 Page 115 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL The calibration process is performed independently on each Q RPT to arrive at its optimal fit CalTool for RPTs software provided with the RPM4 supports the calibration process of RPM4 Q RPTs CalTool and its documentation are provided on a General Accessories Disk with a new RPM4 and can be downloaded from www dhinstruments com Most users should use CalTool software to assist in the calibration of RPM4 is delivered with an interactive Q RPT calibration utility that steps the operator through the complete Q RPT calibration procedure including applying the necessary pressures collecting data automatically calculating new PA and P
111. dit gt to edit the value of Pose for the active Q RPT and measurement mode see Section 3 5 1 1 The value of P is always displayed and entered in Pascal 35 11 EDIT AUTOZ The edit AutoZ function should be used with great caution as entering inappropriate values and turning ON AutoZ may result in out of tolerance measurements In normal operation the value of the AutoZ offset Pa should be changed by running AutoZ using AutoZ seen Section 3 3 9 Before editing Pa see Section 3 5 1 PRINCIPLE To edit the current Poss Value for the active Q RPT and measurement mode press SPECIAL lt 1AutoZ gt lt 3edit gt The display is 1 2 1 Indication of active measurement mode lt abs gt for absolute lt gage gt for gauge and negative gauge lt dif gt for differential Poffset Abs Hi 2 Active Q RPT for which Pottset is being viewed 8 4 Pa 3 Edit field for value of Pottset 3 Edit as desired and press ENT to activate the new value Press ESC to abandon changes The value of Poteet is always displayed and entered Pascal 3 5 2 lt 2REMOTE gt O PURPOSE To configure the RPM4 COM1 COM and IEEE 488 GPIB communication ports To test COM1 and COM2 communications To select the remote programming communications format O PRINCIPLE The RPM4 has two RS 232 communications ports referred to as COM1 and 2 and a single IEEE 488 GPIB port COM 1 or the IEEE 488
112. duce pressure Change UL and or active range if needed 3 4 4 Pressure display is flashing and beeper is sounding intermittently while operating in differential mode Differential pressure upper limit OR Hi Q RPT upper limit is exceeded Reduce differential pressure and or pressure on Hi Q RPT to be less than upper limit values or change upper limit value s 3 4 4 3 3 3 1 Pressure display is NOT flashing and beeper is sounding intermittently while operating in differential mode Lo Q RPT upper limit is exceeded If Lo Q RPT is displayed on second line its measured pressures is flashing Reduce pressure on Lo Q RPT or change its upper limit 3 4 4 3 3 3 1 Hi or Lo RPT EXCEEDED PMAX displays alternating with normal display RPM4 Q RPT has been overpressured Pmax exceeded Correct the overpressure condition and cycle power ON and OFF to clear 3 4 4 1 Rapid beeping for 8 seconds and Check RPT connection gt displayed in second line is in parallel measurement mode and the disagreement in pressure measured by the two Q RPTs indicates they may not be connected in parallel If parallel measurement mode is not desired change ranges or turn it off If parallel measurement is desired check that the Hi and Lo Q RPTs are connected to the same pressure Ignore if having the two Q RPTs on two different pressures is intentional 3 5 7 3 A Ready green Ready Not Ready indicator
113. e DISPLAY is only available in RPM4s with two Q RPTs OPERATION For the sake of clarity when describing the RPT DISPLAY the Q RPT displayed on the top line of the display when the RPT function is selected is referred to as the active Q RPT The other Q RPT to be displayed on the second bottom line of the RPM4 display is referred to as the inactive Q RPT It is inactive in the sense that all RPM4 functions and settings such as UNIT and RES still apply to the active Q RPT To make changes to the inactive Q RPT for example to change its measurement units it must be made the active Q RPT by a conventional range change see Section 3 3 1 In differential pressure measurement mode the Hi Q RPT is always the active Q RPT To activate the RPT DISPLAY press DISPLAY lt 4RPT gt Operation returns to the MAIN RUN screen with the inactive Q RPT displayed on the display s bottom line The range of the inactive Q RPT is always the default range not an AutoRanged range see Section 3 3 4 2 If the RPM4 has only one Q RPT Not available with single RPT displays momentarily and operation returns to the main run screen when DISPLAY lt 4RPT gt is pressed If the RPM4 is in parallel HL see Section 5 5 7 5 mode in which both Q RPTs are used simultaneously when lt 4RPT gt is selected the Q RPT to display on the lower display line must be specified The Q RFT spe
114. e Confirm O DP ie dieplayed when AutoZ ie pressed Check that zero differential pressure is applied across the Hi and Lo TEST porte and press ENTER to continue or ESCAPE to abort Allow the RPM4 to stabilize at atmospheric pressure and ambient temperature for 2 to 5 minutes before running AutoZ in differential mode 3 3 10 ENT RUN AUTOTEST O PURPOSE To run the AutoTest function which AutoRanges the RPMA and runs a calibration test based on user entries of pressure unit measurement mode full scale increment and DUT tolerance Run AutoTest ie accessed by pressing ENT from the Rate or Clean DISPLAY mode see Section 3 3 6 2 In other DISPLAY modes the function of ENT is specific to the mode Page 51 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL 3 4 O PRINCIPLE This feature not available at the time of release of this manual Check www dhinstruments com for new RPM4 embedded software releases and manual updates O OPERATION Feature not available at the time of release of this manual SETUP O PURPOSE SETUP accesses a menu of functions and features commonly used in setting up and using RPM4 O OPERATION To access the SETUP menu press SETUP from the MAIN RUN lrange 2res 3stab screen The display is 4UL 5ATest SETUP menu choices include 1range 2res lt 3stab gt lt 4UL gt lt 5ATest gt Save and delete ranges created by Auto
115. e original factory calibration privileged factory coefficients are used for calibration with the user set to zero and 1 5212 AS RECEIVED AND AS LEFT DATA Frequently calibration procedures require that as received and as left data be reported The necessary information to report as received and as left data on the calibration of RPM4 Q RPTs can be obtained in several ways When the RPM4 CalTool calibration assistance software is used as received data is displayed while running the calibration and is automatically recorded and reported if desired As left data is also calculated and presented At any time a reference pressures applied b associated Q RPT readings PA and PM and values be used to calculate as received and as left values For example backing out PA and PM on the as left data yields the Q RPT 2004 2007 DH Instruments a Fluke Company Page 116 5 MAINTENANCE ADJUSTMENTS AND CALIBRATIONS readings with PA 0 and PM 1 Then applying the as received PA and and Por values to the readings calculates as received readings the readings that the transducer would have made with the old PA PM and Py It is recommended that as received values of PA and Po for Q RPTs if absolute mode AutoZero is used in normal operation be recorded for each Q RPT prior to running the calibration The current PA PM and Por for Q RPTs can be viewed by pressing S
116. e RPM4 to continuously output the selected Q RPT s measurement without further queries This continues until the next query is received by the RPM4 or if the ABORT or CLS command is received The frequency of the measurements is determined by the readrate of the Q RPT The data returned includes the pressure of the specified or active Q RPT current unit of measure and measurement mode Example Query sent 1 enhanced Query reply 1936 72 kPa a repeats every measurement cycle Example Query sent CONT classic Reply 1936 72 kPa a repeats every measurement cycle See Also PR HEADRATE DATE Purpose Read or set the RPM4 date Command DATE date Query DATE Classic DATE date DATE Arguments date The date in the numerical only format YYYYMMDD Remarks The RPM4 has an internal real time calendar clock The span of acceptable dates ranges from 19800101 to 20791231 The reply is always in the YYYYMMDD format Example sent DATE 20030115 enhanced Query reply 20030105 No reply if GPIB 488 Example sent DATE 20030105 enhanced Query reply 20030105 Example Sent DATE 20021201 classic Reply 20021201 Errors ERR 6 Missing or improper program message argument s See Also TIME 3 5 5 3 ERR Purpose Read the new available error message from the Error Queue Query ERR Classic ERR Remarks This program message
117. e TEST port 3 3 9 AuroZ Q PURPOSE To run the AutoZ function that rezeros the active Q RPT between full calibrations e See Section 3 5 1 O Principle for a full explanation of the AutoZ function O PRINCIPLE Run AutoZ is the function by which the current Q RPT reading is compared to a reference at atmospheric pressure to determine a new value of Pa The value of Pottset is then used by AutoZ to automatically correct the Q RPT for possible changes in zero over time see Section 3 5 1 O PRINCIPLE s Running AutoZ in parallel mode see Section 3 5 7 3 autozeros the Hi and Lo Q RPTs simultaneously and independently There is are no Zoffeet values specific to the HL Q RPT See Section 3 3 9 to run Autoz 2004 2007 DH Instruments a Fluke Company Page 46 3 3 9 1 3 OPERATION AUTOZ IN GAUGE AND NEGATIVE GAUGE MODE O PURPOSE To rezero the active Q RPT in gauge measurement mode See Section 3 5 1 O Principle for a full explanation of the AutoZ function O OPERATION E For the AutoZ function key to run AutoZ AutoZ must be turned ON for the active range and measurement mode AutoZ ON is indicated by z to the left of the Q RPT designator on the first line of the main run screen AutoZ ON and OFF is set using SPECIAL lt 1AutoZ gt see Section 3 5 1 If AutoZ is OFF for the active Q RPT and measurement mode lt AutoZ is off gt is displayed when AutoZ is pressed Running Au
118. e as the Hi Example sent READRATE 1000 enhanced Query reply 1000 No reply if GPIB 488 Example sent READRATE 1000 enhanced Query reply 1000 Example Sent READRATE 1000 classic Reply 1000 Errors ERR 6 The period argument is out of range ERR 10 The suffix n is invalid See Also PR PRR SR 3 5 7 2 READYCKn Purpose Read or set the Ready check flag Command READYCKn 1 Query READYCKn Classic READYCKn 1 READYCKn Optional Suffix n The active Q RPT is assumed if no suffix is given 47 Specify the Hi Q RPT if the Hi and Lo Q RPTs are NOT OFF Specify the HL Q RPT if the Hi and Lo Q RPTs are OFF 2 Specify the Lo Q RPT 3 Specify the HL Q RPT if the HL Q RPT is active Remarks The internal ready check flag is cleared whenever the specified or active Q RPT reaches a Not Ready NR condition The READYCK query returns the status of the flag The flag is set by sending the READYCK 1 program message while the Q RPT is in a Ready condition The READYCK program message query can then be used at a later time to determine whether a Not Ready condition has occurred since the ready check flag was set Example sent 1 enhanced Query reply 1 no reply if GPIB 488 Example sent READYCK1 enhanced Query reply 4 Example
119. e current state of SDS for the designated Q RPT Select lt 1 gt to set SDS for normal operation and return to the main run SDS full time Hi screen Select lt 2off gt to open SDS permanently lon 2off so operation is as if SDS were not installed ESC to return without making changes If lt 2off gt is selected and SDS for the Q RPT is not already open the SDS opening screen with indication of the maximum pressure of the Q RPT is displayed This is the same screen used when opening SDS using the SDS key see Section 3 3 8 Check that the pressure applied to the Q RPT module TEST port does not exceed the Pmax value before confirming that SDS should be opened Opening SDS with pressure greater than applied to the test port may cause overpressure damage to the Q RPT lt SPREFS gt PURPOSE To access a menu of RPM4 operational preferences and functions O OPERATION To access the PREFS menu press SPECIAL 1ScrSvr 2sound 3time lt 5prefs gt The display is 4ID 5level The PREFS menu includes lt 1ScrSvr gt lt 2sound gt lt 3time gt lt 410 gt lt 4level gt View and change the screen saver activation time see Section 3 5 5 1 View and change the keypress sounds see Section 3 5 5 2 View and edit the internal time and date settings see Section 3 5 5 3 View the RPM4 serial number SN and view or edit the ID number see Section 3 5 5 4 View and set user security level and
120. e in height frequently called head can cause a significant difference between the pressure measured by the RPM4 at its TEST port height and the pressure actually applied to the device under test which is at a different height In this case it is useful to make a head correction to the pressure measured by the RPMA in order to predict the pressure actually applied at a different height RPM4 can accurately determine head pressures for gases nitrogen helium and air and liquids oil water as the pressurized medium In calculating the head value standard gravity 9 80665 m s is used Gas densities are calculated from the selected gas s standard density correcting for temperature of 20 C and the measured pressure using the gas s compressibility factor to 100 MPa 15 000 psi and extrapolated above 100 MPa Oil density is taken to be 850 cr the density of typical calibration oils at 20 C Water density is taken to be 998 2321kg m 20 C custom liquid density may also be specified The HEAD function key is used to specify the height difference between the RPM4 TEST port and another height Entering a height of zero turns the function off The height unit and the test fluid are specified by pressing SPECIAL lt 3Head gt see Section 3 5 3 Use of the HEAD function to assure in tolerance measurements is most important in low absolute pressure ranges Specifying the head height within 5 cm 2 5 in is adequate to ass
121. e measurement range and associated settings O PRINCIPLE An RPM4 range is defined as a pressure span and associated settings see Section 3 2 3 An RPM4 may have multiple ranges Each Q RPT in the RPM4 system has a default range which is its maximum span Additional ranges lower than the Q RPT s maximum span may also be created using AutoRange see Section 3 3 4 Ranges created using AutoRange may be saved with their settings for reactivation see Section 3 4 1 The RANGE function key allows the available RPM4 pressure ranges to be viewed and selected Page 25 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL O OPERATION Pressing the RANGE function key activates the range viewing and selecting function When the RANGE function key is first pressed the active range is displayed For example 1 Q RPT designator 1 2 3 2 of range DF for the Q RPT s default range AR for a range created by AutoRange Active 700 DF Hi 3 Q RPT position designator psi 100g 100a 4 Current pressure unit of measure 5 Full scale pressure in current unit of measure in gauge and or absolute measurement mode depending on type of Q RPT and range 4 5 Pressing the key or the RANGE key again while in the RANGE functions toggles through displays of the other available ranges from lowest range to highest range To select a range to become the active range press ENT while t
122. e of program message format to use NVENTn Read or set the status of low vent valve Gxxx or BGxxx Q RPT only PCALn Read or set the user Lo Q RPT calibration information PCAL XX Read or set the user Lo Q RPT calibration information old command PRn Read the next RPM4 pressure PRRn Read the next RPM4 pressure rate and QPRRn Read the last RPM4 pressure rate and RANGE Select a Q RPT to be active in it s default full scale range RATEn Read the next available rate of change of pressure READRATEn Read or set the Q RPT measurement read rate and mode READYCKn Read or set a flag that is cleared by a Not Ready condition REMOTE Enable remote local lockout operation RESn Read or set the pressure display resolution for the current Q RPT and range RESET Reset the RPM4 to default user parameters RPTn Read the available Q RPT data SCRSAV Read or set the front panel screen saver period SDSn Read or set the SDS state for a specific SDSACT Read or set the active Q RPT SDS state SDSAUTOn Read or set the SDS mode for a specific Q RPT SN Read the serial number of the RPM4 SRn Read the next available pressure status Ready Not Ready SSn Read or set the stability required for a Heady condition SS n Read or set the stability required for a Ready condition span s TIME Read or set the current time of day UCOEFn Convert a pressure in Pascal to pressure in the current units UDU Read or set the user defined pressure unit
123. e spaces precede this character if needed The temperature reference is added to the reply only if the unit is InWa The reply includes the measurement mode character in the fifth position with an a indicating absolute mode a g indicating gauge or negative gauge mode or a indicating differential mode The MODE command can also be used to set the desired measurement mode only Example sent UNIT kPaa enhanced Query reply kPaa Sent UNIT InWag 4 Query reply inWag 4 Sent UNIT InWaa60 Query reply inWaa 60 Example sent UNIT psi n enhanced Query reply psi g g used to indicate both gauge amp neg gauge modes Example Sent UNIT kPaa classic Reply kPaa Sent UNIT InWag 4 Reply inWag 4 Errors ERR 7 The unit is invalid ERR 6 The ref is invalid ERR 20 Absolute measurement mode and altitude units are not allowed with a gauge Q RPT See Also MODE 3 3 2 3 3 3 3 5 6 7 2 1 VER Purpose Identify the RPM4 US or SI units the Q RPT labels and the software version Query VER Classic VER Remarks The software version of the can be read This is useful for checking for the presence of the RPMA and for reference purposes It indicates the internal Q RPT s and software version Example Query sent VER enhanced Query reply DH INSTRUMENTS INC RPM4 us A350K BG15K Ver1 00 Example Query sent VER classic Query
124. ed with SDS SDS is CLOSED at power up and the TEST port is shut off This causes lt SDS CLOSED to be flash periodically in the main run ecreen in place of the measured pressure value 2004 2007 DH Instruments a Fluke Company Page 12 2 4 2 2 INSTALLATION CHECK PRESSURE MEASUREMENT OPERATION 242 11 ABSOLUTE MODE PRESSURE MEASUREMENT If the RPM4 has Axxx absolute Q RPT check that it operates properly in absolute mode Make sure that the TEST port is vented to atmosphere Use the RANGE function key to select the Axxx absolute Q RPT DF range see Section 3 3 1 Press the MODE function key and select absolute mode see Section 3 3 3 Use UNIT to change the pressure unit if desired see Section 3 3 2 If SDS is CLOSED lt SDS CLOSED flashes over the display of pressure on the top line of the display OPEN SDS Press SDS 2yes to OPEN SDS see Section 3 3 8 Do NOT OPEN 5 5 with a pressure higher than the maximum pressure of the Q RPT applied to the TEST port Damage to the Q RPT may result Observe the current value of atmospheric pressure Check that the value agrees with the local value of atmospheric pressure within measurement tolerances see Section 1 2 2 1 Repeat this process for both Axxx absolute Q RPTs if there are two in the RPM4 If a Q RPT does not agree within tolerance it may need to be AutoZeroed see Section 3 3 9 calibrated see Section 5 2 o
125. ents baud rate This may be 300 600 1200 2400 4800 9600 or 19200 Parity The data parity This may be O for odd E for even or N for none Data The number of data bits This may be 7 or 8 Stop The number of stop bits This may be 1 or 2 Defaults 1 2400 E 7 1 Remarks The COM port is used to communicate to the RPM4 When the COM 1 port configuration of the RPM4 is changed the program message reply COM1 use only is sent at the old COM1 settings but all subsequent communications are accomplished at the new COMI settings A 250ms or longer delay after receiving the reply to this command will ensure that the RPM4 has changed the COM port settings and is ready for communications at the new settings Example sent COM1 9600 N 8 1 enhanced Query reply 9600 N 8 1 No reply if GPIB 488 Example sent COM1 9600 N 8 1 enhanced Query reply 9600 N 8 1 Example Sent 1 9600 8 1 classic Reply 9600 8 1 Errors ERR 7 Missing or improper program message argument s See Also COM2 3 5 2 1 COM2 Purpose Read or set the RS232 settings for the COM2 port Command 2 baud parity data stop Query COM2 Classic 2 baud parity data stop COM2 Arguments baud baud rate This may be 300 600 1200 2400 4800 9600 or 19200 parity The data pari
126. es should be used in gauge mode only see Sections 3 3 3 O PRINCIPLE 5 2 5 e Able to supply the recommended sequence of pressure points in the range to be calibrated See Section 5 2 4 for information on the recommended calibration point sequence for various Q RPT types and classes 5 2 3 SET UP AND PREPARATION To set up and prepare an RPMA for calibration of a Q RPT Set the RPM4 on a stable surface near the calibration standard at a height as close as possible to the calibration standard s reference height Consider the connections that may need to be made to the rear panel and access to the front panel display and keypad Connect the calibration standard output to the TEST port of the Q RPT module to be calibrated on the RPM4 rear panel 1 8 in NPT F or DH500F depending on range see Section 2 3 5 If the Q RPT module has a TEST port leave it unobstructed or connect it to the reference standard s TEST port if available Open SDS Self Defense System if present see Section 3 3 8 for the Q RPT to be calibrated When the indicates lt SDS CLOSEDs gt the TEST port is isolated from the Q RPT to be calibrated Opening SDS with a pressure greater than Pmax applied to the test port may cause overpressure damage to the Q RPT The Q RPTs of RPM4s used in parallel measurement mode must be adjusted separately PA and PM for the Hi and Lo Q RPT need to be determined and set individually Therefore data to be used
127. essessessees 126 5 5 SUBASSEMBLY DESCRIPTION AND LOCATION seennneeenennnnnnnnereites 127 5 5 1 MINI MICRO BOARD Q cssssssssssssssssssssssssssssssssssssssssssssssssssssssssssussssssssssssssuuessssssssssssusuussssssssssessssssuussesseee 127 5 5 2 SUPPLY MODULE ennui 127 553 DRIVER BOARD xi de made ner D DA IE tan an 128 5 5 4 ON BOARD BAROMETER ennemie nie 128 555 eS an on TE an retium nein n ei 5 5 5 1 CENE SR MODULE E E E I E 5 5 5 2 LOQ RPT MODULE 555 DISPLAY ee ne 5 6 Q RPT MODULE PNEUMATIC 5 129 Page III 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL 6 TROUBLESHOOTING 7 APPENDIX 71 REMOTE ENT 7 2 UNIT CONVERSION 7 2 1 PRESSURE 8 WARRANTY 8 1 OVERVIEW 9 GLOSSARY 2004 2007 DH Instruments a Fluke Company Page IV TABLES amp FIGURES H DH Instruments TA B L E S A Fluke Company Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9 Table 10 Table 11 Table 12 Table 13 Table 14 Table 15 Table 16 Table 17 Table 18 Table 19 Table 20 Table 21 Table 22 Table 23 Table 24 Table 25 Table 26 Table 27 Table 28 Table 29 Reference Pressure Transducer Q RPT Module Designations and Ranges 3 Packing EIst e oe de e Ee Me edd 7 Position Desig
128. etting is changed If RPM4 detects a condition 2004 2007 DH Instruments a Fluke Company Page 76 3 5 8 3 OPERATION in which it determines there could be a risk of overpressure to the Q RPT by opening the TEST vent valve the message Cannot open lo vent DP overpressure risk is displayed If this message is displayed return to normal operation vent the RPM4 Q RPT module and try again Select lt 3close gt to cause the TEST vent valve to close and remain closed regardless of RPM4 operation until the setting is changed Select lt 4view gt to view the current condition of the TEST valve The display indicates whether current valve operation is controlled by the RPM4 Auto TEST vent or has been set manually Manual TEST vent followed by the current valve status lt Open gt or lt Close gt If the RPM4 is being used as an external device to a PPC3 pressure controller see Section 3 5 7 4 the Lo Vent setting may be changed from the PPC3 see the PPC3 Operation and Maintenance Manual 3575 lt LOG gt O PURPOSE To view and or clear the RPM4 event log O PRINCIPLE RPM4 records to a log each time one of the following events occurs e Pmax of an internal RPM4 Q RPT or utility sensor is exceeded see Section 3 4 4 1 e Amemory fault occurs OPERATION To view the event log press SPECIAL lt 9Log gt Use lt gt move back forth between older newer log
129. ettings see Section 3 2 1 MEASHI Hi Q RPT measurement ready Bit 2 4 Indicates that the Hi Q RPT has completed a Q RPT measurement NRDYHI Hi Q RPT pressure Not Ready Bit 1 2 Indicates that the Hi Q RPT made a transition from Ready to Not Ready as defined by the stability settings see Section 3 2 1 RDY HI Hi Q RPT pressure Ready Bit 0 1 Indicates that the Hi Q RPT is Ready as defined by the stability settings see Section 3 2 1 4 6 IEEE STD 488 2 COMMON AND STATUS PROGRAM MESSAGES The RPMA supports a set of commands that are common to all instruments conforming to IEEE Std 488 2 These command make it easy to perform basic function for any device that supports these commands These commands also cover the status reporting commands See Section 4 5 for details on the status registers mentioned in these commands Table 21 Program Message List Clear all of the status amp event structures Read or set the Standard Event Status Enable Register Read the Standard Event Status Register Identify the RPM4 version range and serial number Set the operation complete bit when all operations have completed Read the list of installed RPM4 options Reset the RPM4 settings to factory settings Read the power on self test status Read or set the Service Request Enable Register Read the Status Byte Register Read or set the Ready Status Enable Register Read the Ready Status Register
130. ew and edit COM port RS 232 and IEEE 488 interface settings Select remote syntax style see Section 3 5 2 lt 3head gt Set HEAD function fluid and height unit of measure see Section 3 5 3 lt 4SDS gt To view and set the ON OFF and OPEN CLOSED status of SDS for all Q RPTs lt 5prefs gt View and set screen saver time keypad sound frequency unit ID number time date security protection level see Section 3 5 5 lt 6Punit gt Customize the UNIT key pressure unit of measure selections See section 3 5 6 lt 7intern gt Access internal functions including on board barometer viewing read rate adjustment parallel measurement mode ON OFF direct control of Lo Vent valve s incident log viewing see Section 3 5 7 lt 8cal gt View and adjust RPM4 Q RPT and barometer calibration coefficients see Sections 3 5 8 5 2 5 3 lt 9reset gt Access RPM4 s various reset functions see Section 3 5 9 Page 57 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL 3 5 1 lt lAuTOZ gt O PURPOSE To offset the RPM4 Q RPT s readings relative to a reference value in order to compensate for possible changes in Q RPT zero between full recalibrations In differential measurement mode to compensate for the difference between the reading of the Hi and Lo Q RPTs at the line pressure at which differential measurements are made To assure operation within measurement uncertainty specifications see Section 1
131. formed or unauthorized altering or deleting of data settings and functions could require extensive reconfiguration by the user and might cause invalid readings and behavior For these reasons depending upon the application in which RPM4 is being used it may be desirable to restrict access to some functions The user level function provides a means of restricting access to certain functions Four different levels of security are available 2004 2007 DH Instruments a Fluke Company Page 68 3 OPERATION Access to changing security levels can be left open or be protected by a password Security Levels The security levels are structured to support typical operating environments as follows None Low This level is intended for use only by the system manager and or calibration facility It allows access and editing in all areas including critical metrological information Low security is designed to protect the specific metrological information and SYSTEM DIAGNOSTIC AND MAINTENANCE functions of the system against accidental alteration It is intended for an advanced operator performing many different tasks Low security is the default user level setting Medium Medium security is designed to protect specific metrological High information in the system and to assure that the RPM4 is operated using consistent operational parameters High security is designed to protect all operating parameters It is intended to minimize operator
132. g an Axxx Q RPT this connection must also be open to atmosphere When using a Gxxx or BGxxx Q RPT it is preferable that this connection not be open to atmosphere Do not connect a pressure supply to the TEST port The pressure applied to this port should be maintained at atmospheric pressure between 70 and 110 kPa 10 and 16 psia Exceeding these limits may damage Gxxx or BGxxx Q RPT and or the RPM4 s on board barometer Using the RPM4 with gas operated Q RPTe connected to a system with liquid contaminants without taking proper precautions to purge the system and test line may cause contamination of the RPM4 that will require non warranty service 23 6 THE VENT OR ATMPORT Q RPT modules of A7M and lower have a VENT port The VENT port is connected to the TEST port when SDS is CLOSED see Section 5 6 Figure 8 For Axxx and BGxxx Q RPTs the RPM4 on board barometer is connected to the VENT port when SDS is CLOSED The VENT port should always be left completely unobstructed and open to atmosphere Q RPT modules of A10M and higher have port The port is connected to the RPM4 on board barometer The ATM port should always be left completely unobstructed and open to atmosphere NEVER plug obstruct or connect a supply pressure to the RPM4 VENT or ATM port This may adversely affect GAUGE mode operation and AutoZeroing functions 23 7 CHECK SET SECURITY LEVEL RPMA has a security system based o
133. ge 3neg gage 4dif To activate differential measurement mode press the keypad number key for the dif selection or move the cursor to the dif selection and press ENT Operation returns to the main run screen When differential mode is active the cursor is on both the base mode and differential mode When differential mode is active the Q RPT position indicator is in the upper right hand corner of the main run screen and other displays ie Hd instead of Hi see Section 3 2 3 Table 3 When differential mode is activated AutoZ should be at the line pressure with zero differential pressure applied to eliminate the zero error on differential pressure due to the disagreement of the Hi and Lo Q RPTs see Section 3 3 9 3 Page 29 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL The following operating conditions are specific to differential mode Main run screen measured pressure display Default DISPLAY function SDS function AutoZ function Leak Check function Head function AutoRange function UL function AutoTest function 3 3 4 AUTORANGE O PURPOSE The display of measured pressure in the main run screen is the difference between the Hi and the Lo Q RPTs Hi Lo with a differential mode AutoZ correction see Section 3 3 9 3 The pressure measurement mode indicator is d The Q RPT position indicator is Hd The default display function is
134. han 0 or 1 ERR 10 The suffix is invalid See Also ZOFFSET MMODE 3 5 1 AUTOZEROn RUN Purpose Run the AutoZero routine Command AUTOZEROn RUN Pref Query AUTOZEROn RUN Pref Classic AUTOZEROn RUN Pref Optional Suffix pra n The active Q RPT is assumed if no suffix is given 47 Specify the Hi Q RPT if the Hi and Lo Q RPTs NOT OFF Specify the HL Q RPT if the Hi and Lo Q RPTs are OFF 2 Specify the Lo Q RPT 3 Specify the HL Q RPT if the HL Q RPT is active Arguments Pref The AutoZ reference pressure in Pa Optional when the RPM4 is not in absolute measurement mode as the reference is usually 0 Remarks The RPM4 AutoZ function can be remotely run with this command only if AutoZero is ON You should ensure that the pressure is stable for valid determination of Zottset If in differential mode the previous 5 measurements of the Q RPTs are averaged for Zottset calculation so you should ensure that the RPM4 has been stable for at least 5 measurement cycles before running a remote AutoZ in differential mode Example sent AUTOZERO RUN enhanced Query reply No reply if GPIB 488 Example Cmd sent AUTOZERO RUN 97283 abs AutoZero to 97283 Paa enhanced Query reply Example Sent AUTOZERO RUN classic Queryreply OK Errors ERR 6 An argument was not given for the AutoZ refe
135. he range is displayed Pressing ESC while in the RANGE function returns to the MAIN RUN screen without making a range change Range full scale limits are given in the pressure unit that is currently active for that range Pressing from the MAIN RUN screen provides a shortcut to momentary view of the active range s Many RPM4 settings and functions are range specific See Table 4 for identification of range epecific settings For best metrological performance vent the RPM4 Q RPT before changing ranges 3 3 2 UNIT O PURPOSE To select the unit of measure in which RPM4 displays pressure values s For information on selecting the measurement mode absolute gauge negative gauge differential see Section 3 3 3 O PRINCIPLE RPMA allows the unit of measure in which pressure values are displayed to be changed RPM4 supports 15 standard pressure units of measure as well as user defined units To simplify operation quick access to six units is made available under the UNIT key The default units available depend on whether the RPM4 was originally configured as an SI or US version The UNIT key contents can be customized by the user to any configuration of six units see Section 3 5 6 2004 2007 DH Instruments a Fluke Company Page 26 3 OPERATION Internally RPM4 always operates in Pascal Pa the SI unit of pressure Values of pressure are represented in other units by the application of conversi
136. hichever is greater For example if the Q RPT is a Premium A160K and AutoRanged span is 160 kPa the Measurement Uncertainty in pressure is measured pressure x 0 008 to 48 kPa 160 kPa AutoRanged span x 30 and 0 0038 kPa 160 kPa span x 30 x 0 008 under 48 kPa If the AutoRanged span is 100 kPa greater than 30 of 160 kPa maximum Q RPT span the Measurement Uncertainty in pressure is measured pressure x 0 008 to 30 kPa 100 kPa AutoRanged span x 30 and 0 0025 kPa 100 kPa span x 30 x 0 008 under 30 kPa If the AutoRanged span is 30 kPa less than 30 of the 160 kPa maximum Q RPT span the Measurement Uncertainty pressure is measured pressure x 0 008 to 14 4 kPa 160 kPa maximum Q RPT span x 9 and 0 0012 kPa 160 kPa maximum Q RPT span x 9 x 0 008 under 14 4 kPa L222 ON BOARD BAROMETER The on board barometer is used only to measure changes in atmospheric pressure to provide dynamic compensation of the Q RPT s atmospheric pressure offset when using an Axxx absolute Q RPT to make gauge pressure measurements and for line pressure compensation of G15K and BG15K Q RPTs There is no on board barometer in RPM4s that have Gxxx gauge Q RPTs only 2004 2007 DH Instruments a Fluke Company Page 4 L2 3 Power Requirements Operating Temperature Range Storage Temperature Range Vibration Weight Dimensions Battery Type Battery Voltage Battery Capacity Charge Time Approx Run Time Full Charge 1 INTRODUC
137. ibration date YYYYMMDD and and PM edit mode the values can be edited Pressing ENT after the last screen activates the edited values gt To view the current output of the on board barometer press SPECIAL 7Internal lt 3baro gt Page 125 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL 5 4 RELOADING EMBEDDED SOFTWARE INTO FLASH MEMORY RPM4 uses FLASH memory This allows the embedded software that controls RPM4 operations and functions to be loaded into RPM4 over its COM1 port from a computer with a simple FLASH loading utility program To replace corrupted software or upgrade your software access the DHI worldwide web site at www dhinstruments com and go to SOFTWARE A FLASH loading utility and the latest RPM4 software are available for download at no charge If you do not have access to the web or have difficulty downloading or loading software contact your DHI representative or a DHI Authorized Service Provider see Table 29 for assistance If you believe you have discovered an error or bug in RPM4 software please report it with complete details by email to cal repair dhinstruments com or submit an on line Quality Feedback Report under CALIBRATION amp REPAIR at www dhinstruments com The DHI flash software loading utility and RPM4 embedded software are available for download from www dhinstruments com in the SOFTWARE section 2004 2007 DH Instruments a Fl
138. icated pressure setting and measuring instrument with advanced on board features and functions Before assuming that unexpected behavior is caused by a system defect or breakdown the operator should use this manual and other training facilities to become thoroughly familiar with RPMA operation This troubleshooting guide is intended as an aid in identifying the reason for RPM4 behavior and determining whether the behavior is due to normal operation or an internal or external problem Identify the symptom or unexpected behavior you are observing from the SYMPTOM list below A PROBABLE CAUSE is provided and a SOLUTION is proposed including references to manual sections that provide information that may be of assistance Table 27 Troubleshooting Guide SYMPTOM Will not power up PROBABLE CAUSE Blown fuse SOLUTION Replace fuse Cannot access certain functions gt ACCESS RESTRICTED lt User level has been set that restrict access to certain functions Change user level or consult system manager 3 5 5 5 Displays lt FATAL ERROR gt or lt FATAL FAULT gt Encountered unresolved internal software conflict Cycle power to clear Please record conditions leading up to event including the numbers displayed when ENT is pressed and report to your DHI Authorized Service Provider Table 29 Front panel keys seem to be disabled lt remote gt command has been sent from a host computer Send lt local gt comma
139. ific Suffix of 1 for Hi Q RPT access Suffix of 2 for Lo Q RPT access Suffix of 3 for HL Q RPT access If an optional suffix is allowed but not given then the Active Q RPT will be addressed The Active Q RPT is the Q RPT that is currently displayed on the top line of the front panel of the and is identified by the text label in the upper right of the pressure display screen last Q RPT ranged or selected using the RANGE or ARANGE commands is the Active Q RPT The ARANGE RANGE or RPT command query can be used to determine which Q RPT is currently active With the Hi Q RPT In differential mode of operation there are some limitations on access to the Lo Q RPT and with the HL Q RPT there are limitations on access to both the Hi and the Lo Q RPTs independently Arguments If the program message can be used to set data inside the RPM4 then this section describes the arguments and their limits Default If the program message can be used to set data inside the RPM4 then this line shows using the enhanced format the default setting from the factory Remarks This field has the details and remarks about the command Example Examples are given for the enhanced and classic methods Enhanced An example of the use of an enhanced format program message to be sent to the RPM4 is shown The message sent to the RPM4 appears after the sent label If only a Query
140. in differential mode see Section 3 3 3 1 or the HL Q RPT is active see Section 3 2 4 See the program message descriptions for suffix use with a specific command Table 16 Program Message List COMMAND m indicates DESCRIPTION optional suffix Send a command string out of the RPM4 2 port ABORT Stop pending operations ARANGEn Read or set a new AutoRange to use ATM Read the current atmospheric pressure on board barometer AUTOZEROn Read or set the status of the AutoZ automatic zeroing function AUTOZEROn RUN Run AutoZero CALAMB Read or set the on board barometer calibration COM1 Read or set the configuration of the COM1 port 2 Read set the configuration of the 2 port CONTn Enable continuous measurements DATE Read or set the current date ERR Read the last error message GPIB Read or set the GPIB interface address HEAD Read or set the fluid head settings ID Read or set the RPM4 alphanumeric asset ID tag L2 Selects classic program message format L3 Selects enhanced program message format LLn Read or set the lower limit for the current range negative gauge and differential modes only LOCAL Return control to the RPM4 front panel MEM Read the power up memory test status MMODEn Read or change the active measurement mode MSGFMT Read or set the typ
141. ings are reset to default as if the RST program message was executed and the TST query will return a non zero value If the RPM4 passed the test on power up OR if the TST query was used at least once since the RPM4 was powered up the reply will be a 0 Example Sent RST enhanced Reply 1 RSE Purpose Read or set the Ready Status Enable Register Command RSE m Query RSE Default RSE 0 Arguments n 0 to 255 This is the decimal representation of the bit s to enable To enable the RDY bit the argument would be 1 Remarks The Ready Status Enable Register determines which bits in the Ready Status Register are enabled and included in the Status Byte Register RSR bit and can assert the SRQ line The reply is in decimal numeric form Example Sent RSE 1 enables the RDY bit enhanced Query reply 1 no reply if IEEE 488 Errors ERR 6 nis not valid RSR Purpose Read the Ready Status Register Command RSR Remarks The Ready Status Register contents are cleared after reading The reply is in decimal numeric form Example Sent RSR enhanced Reply 6 The MEAS and NRDY Page 113 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL NOTES 2004 2007 DH Instruments a Fluke Company Page 114 5 5 1 5 MAINTENANCE ADJUSTMENTS AND CALIBRATIONS H DH Instruments A Fluke Company MAINTENANCE ADJUSTMENTS AN
142. is supplied on the 12VDC connection To Use the Battery Charger Pack to Supply RPM4 After charging the battery connect the 12VDC connection of the battery charger pack to the 12VDC connection on the RPM4 rear panel Turn the battery charger pack power switch to OFF when AC power is connected to the battery charger pack the power switch must be OFF for 12VDC power to be output When RPM4 is connected to both 12 VDC source and an AC source if the RPM4 power switch is OFF the 12VDC source supplies the RPM4 if the RPM4 power switch is ON the 12 VDC source is disconnected and the AC source supplies the RPMA To Check the Battery Charge Level To check the current charge level of the battery press the toggle switch on the battery charger pack front panel Observe the BATTERY CHECK indicator lights All three lights are lit when battery is fully charged If no light or one light is on the battery should be recharged Figure 5 Battery Pack Charger Page 23 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL 3 2 7 SDS SELF DEFENSE SYSTEM Q RPT modules designated 7M or lower that are NOT liquid filled are equipped with the SDS self defense system The SDS system includes hardware and embedded software to isolate Q RPTs from overpressure When SDS is CLOSED for a Q RPT module the Q RPT is isolated from the modules TEST port and opened to the modules VENT port See Section 5 6 Figure 8 SD
143. isplay resltn Hi lt 2res gt The display is 0 0010 FS and Use the cursor control keys to set the desired level of resolution Press ENT to return to the MAIN RUN screen with the new resolution setting active or ESC to make no changes The resolution setting is range specific A resolution setting made in one range does NOT affect other ranges e The measured pressure resolution is fixed for altitude unite at 1 m in meters and 1 ft in feet The maximum resolution setting is limited AutoRange ranges that are less than 10 of the Q RPT default full scale 3 43 lt 35 gt O PURPOSE To view and or adjust the stability test that is the Ready Not Ready criterion for the active RPT and range gt Section 3 2 1 Pressure Ready Not Ready Indication O PRINCIPLE RPMA continuously monitors the rate of change of pressure measured by the active RPT and range and compares this rate to the stability limit to make a Ready Not Ready determination see Section 3 2 1 Pressure Ready Not Ready Indication The stability function allows the stability limit to be adjusted by the user to increase or decrease the stability required for a Ready condition to occur s The default stability limit is 0 005 FS of the active range s The stability limit ie separate and different from the Rate DISPLAY function see Section 3 3 6 2 which allows the current rate of change of pressure to be displayed 2004 2007 DH I
144. ith changes made in the AutoZ edit or run function see Section 3 5 1 Pressing ENT on the last field goes to the next view edit screen 1 2 1 Value of PA 0 0 Hi 2 Position designator of the Q RPT being viewed 3 Value of PM PM 1 000000 3 If in edit mode the calibration fields can be edited If the selected Q RPT is an Q RPT pressing ENT in the PM field goes to the next calibration information display this display is skipped if the Q RPT is a Gxxx or BGxxx type 1 Position designator of the Q RPT being viewed Absolute and Hi 2 Cursor is on current ON or OFF selection neg 4 mode lon 2off 2 The cursor is on the current setting If in edit mode the or OFF status can be changed by selecting lt 1on gt or lt 2off gt see Section 5 2 5 ENT in view mode returns to the view edit screen ENT in edit mode goes to confirmation of change activation if changes have Page 123 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL been made in any of the calibration screens Pressing ESC in any edit screen exits the edit screen without activating any changes The value of PA is always in Pascal Pa The value of PM is dimensionless 5 2 8 Q RPT CALIBRATION ADJ USTMENT WITHOUT CALTOOL FOR RPTS SOFTWARE O PRINCIPLE The RPM4 Q RPTs can be calibrated and adjustments made without using CalTool for RPTs software This requires
145. k The REMOTE program message can lock the front panel out completely The user can return to local operation by sending the LOCAL program message sending the IEEE 488 GTL command if in enhanced format or by cycling RPM4 power Example sent LOCAL enhanced Reply LOCAL no reply if IEEE 488 Example sent LOCAL enhanced Reply LOCAL Example Sent LOCAL classic Reply LOCAL See Also REMOTE 2004 2007 DH Instruments a Fluke Company Page 94 4 REMOTE OPERATION MEM Purpose Read the status from the power up memory test Query Classic Remarks The RPM4 system memory stores the user settings units resolution and retains them when the unit is OFF On power up this memory is checked If this memory is corrupted all user settings are reset to default and the MEM status is set to reflect this Example Query sent MEM enhanced Reply 0 RPMA data corrupted and was set to factory defaults 1 The memory was found to be on power up Example Sent MEM classic Reply 0 RPM4 data corrupted and was set to factory defaults MEM 1 The memory was found to be OK on power up See Also 3 5 9 3 5 7 5 MMODEn Purpose Read or change the active measurement mode Command MMODEn mode Query MMODEn Classic MMODEn mode MMODEn Optional Suffix n The ac
146. le for a full explanation of the AutoZ function O OPERATION For the AutoZ function key to run AutoZ AutoZ must be turned ON for the active Q RPT and measurement mode AutoZ ON is indicated by lt z gt to the left of the range designator on the first line of the main run screen AutoZ ON and OFF is set using SPECIAL lt 1AutoZ gt see Section 5 5 1 If AutoZ is OFF for the active range and measurement mode AutoZ OFF is displayed when AutoZ is pressed Running AutoZ in or parallel mode see Section 5 5 7 5 autozeros both the Hi and Lo Q RPTs simultaneously To run AutoZ in absolute measurement mode set absolute measurement mode see Section 3 3 3 and press AutoZ from the main run screen The display is 1 2 1 Active Q RPT designator 2 Current measurement mode absolute AutoZ Hi abs by 3 Selection of source of Pago reference to which lEntry 2 2 3Lo RPT to AutoZ t 3 Selecting lt 1Entry gt allows the value of Po to be entered from the front panel keypad Selecting lt 2COM2 allows the value of Pstao to be read automatically from another DHI RPMXx connected to RPM4 s COM2 communications port Selecting lt 3Lo RPT gt is shown only if the active Q RPT is Hi and there is a Lo Q RPT in the RPM4 This selection allows the value of Pas for the Hi Q RPT to be read automatically from the RPM4s Lo Q RPT Allow the RPM4 to stabilize at atmospheric pressure and ambient temperature for 10 to
147. lp assure that you use this feature to best advantage e n gauge and differential measurement mode Always leave AutoZ ON when operating e absolute measurement mode Always leave AutoZ ON when operating if the Autoz routine has been run regularly using a valid atmospheric reference e assure operation within measurement uncertainty specifications see Section 1 2 2 run AutoZ whenever vented in gauge mode whenever the line pressure is changed in differential mode and at least every 30 days or when RPM4 has been exposed to temperature changes exceeding 15 C 36 F in absolute mode e n absolute measurement mode Run AutoZ only when a reference whose measurement uncertainty is known to be significantly better than that of the Q RPT to be AutoZeroed is available Keep range ratios in mind when comparing uncertainty A 0 01 96 FS barometer is roughly 10 times better than an 0 01 1 MPa 150 psi Q RPT because the Q RPT barometer pressure ratio is 10 1 The measurement uncertainty comparison should be made at 30 of span for both standard class and premium class Q RPTs Though it may not be practical and generally is not necessary the best possible reference with which to run AutoZ in absolute measurement mode is a gas operated piston gauge such as a DHI PG7601 applying atmospheric pressure to the RPM4 test port The best day to day reference is a properly calibrated DHI RPM4 with a BA100K Q RPT interfaced directly as an exter
148. lt 5pref gt lt 4ID gt lt 2edit gt SPECIAL lt 6Punit gt SPECIAL lt 7internal gt SPECIAL lt 7internal gt lt 3RPT2x gt SPECIAL lt 7interrnal gt lt 5log gt clear log SPECIAL lt 8cal gt SPECIAL lt 8cal gt lt 2edit gt under any selection SPECIAL lt 4reset gt SPECIAL lt 4reset gt lt 4cal gt SPECIAL lt 4reset gt lt 5all gt Remote communications disabled e indicates the function menu is NOT accessible 2004 2007 DH Instruments a Fluke Company Page 70 3 OPERATION OPERATION RPM4 is delivered with no active password and access to the User Level menu is open The user level is set to lt 1Low gt User levels can be changed freely until a password has been created To access the LEVEL function 1 press SPECIAL lt 5prefs gt lt 5level gt ese eee 2edit password The display is Selecting lt 1change user level gt brings Restrictions lnone up the restriction menu 2low 3medium 4high The cursor is on the current restriction level Select a different level or or ESC back to the MAIN RUN screen If no password is active selecting 2edit password displays the user password and allows it to be edited Password pppppp 0 disables password A Once a password has been entered the user level cannot be changed without
149. lute and negative gauge modes OFF RptMode A if Q RPT is Axxx and supports absolute gauge and negative gauge measurement modes G if Q RPT is gauge Gxxx or Axxx with absolute and negative gauge modes OFF and supports only gauge measurement mode N if Q RPT is BGxxx and supports gauge and negative gauge measurement modes Cmd sent RPT2 Get information on the Lo Q RPT Query reply A350K IL 82345 35 50 A sent RPT3 Get information on the HL Q RPT Query reply A7M HL 82345 1000 1000 A ERR 4 External device not detected ERR 10 Invalid suffix 3 23 3 2 4 Purpose Command Query Read or set the OPEN CLOSE status for the specified or active Q RPT SDS systems This is equivalent to use of the SDS temporary OPEN CLOSE function from the RPM4 front panel SDSn close SDS n SDS n Default SDSn 1 Optional Suffi n The active Q RPT is assumed if no suffix is given 17 Specify the Hi Q RPT s SDS if the Hi and Lo Q RPTs are NOT OFF Specify the HL Q RPT s SDS if the Hi and Lo Q RPTs are OFF 2 Specify the Lo Q RPT s SDS 3 Specify the HL Q RPT s SDS if the HL Q RPT is active Arguments Example enhanced Example classic Errors close 0 to OPEN the SDS system 1 to CLOSE the SDS system Each Q RPT of designation A7M or less can have an SDS system which can be either OPEN or CLOSED This command allows access to each one
150. ly 100 00 psi A IH Example Cmd sent ARANGE 250 inWa4 G range of 250 inWa 9 4 C in gauge mode enhanced Query reply 250 00 inWa G IH Lo Q RPT is used Example Cmd sent ARANGE 500 kPa G range of 500 kPa in gauge mode classic Query reply 500 00 kPa G IL Lo Q RPT is used Example Cmd sent ARANGE2 50 psi A range of 50 psi in absolute mode on enhanced the Lo Q RPT Query reply 50 000 psi A IL No reply if GPIB 488 Example Cmd sent ARANGE Hi Q RPT s prev range made active enhanced 500 000 kPa A IH No reply if GPIB 488 Query reply Errors ERR 6 Range maximum pressure exceeds available Q RPTs or is negative ERR 10 RPT specified by the optional suffix is not valid for the current operating conditions ERR 19 Cannot Range to 0 with absolute units ERR 20 Cannot Range to 0 with gauge units ERR 29 Correct type of Q RPT for the selected Mode is not available ERR 53 RPT specified is not available See Also RPT RANGE MMODE UNIT 3 3 4 3 2 4 3 3 3 3 3 2 Page 89 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL ATM Purpose Reads the next measured pressure from RPM4 s on board barometer if present Query ATM Classic ATM Remarks The atmospheric pressure as measured by the RPM4 on board barometer is returned in the c
151. measurement May be Q RPT designated as Hi Lo or HL depending on its position and role in the RPM4 Quartz Reference Q RPTs are designated by a leading A G or BG absolute gauge or bi directional Pressure Transducer gauge followed by three numbers and a letter indicating the maximum range of the Q RPT in kPa nnnK or MPa nnnM A DISPLAY function in which the rate of change of pressure in pressure unit second is displayed Front panel LED indication of when the pressure measured by RPM4 s active Q RPT is Ready Not Ready stable within the stability limit Leading character of the second line when the inactive Q RPT is displayed on the second line in RPT DISPLAY mode RPT2x Parallel measurement mode in which both Q RPTs of an RPM4 with two Q RPTs are used together and the indicated pressure is the average of their measurements SDS Self Defense A system to protect Q RPTs from overpressure made up of isolation and vent valves System and internal operating logic Applies only to Q RPTs designated A7M or lower The difference between FS and the lowest point in a range For example the span of a 100 kPa FS range in negative gauge mode is nominally 200 kPa from 100 kPa to 100 kPa A limit expressed in units of pressure per second e g KPa second The stability limit is used Stability Limit as the Heady Not Ready criterion Ready if rate of change is less than stability limit Not Ready if rate of change is greater than stability limit
152. ment mode is selected on top of the Hi Q RPT s base measurement mode gauge absolute or differential Differential range is positive to maximum pressure of the Hi Q RPT and negative to the minimum pressure of the Lo Q RPT base measurement mode see Section 3 3 3 1 for specific information on operation in differential measurement mode Which measurement modes are available depends on the type of Q RPT type s available There are three types of Q RPTs Axxx Q RPTs with designators starting with A measure pressure relative to a sealed vacuum reference and are intrinsically absolute Q RPTs support measurement in absolute gauge and negative gauge modes Gauge and negative gauge modes are accomplished by offsetting of atmospheric pressure with dynamic compensation for atmospheric pressure changes between offsets using an on board barometer see Section 3 2 2 Access to absolute and negative gauge operation can be turned OFF see Section 5 2 5 In RPM4s with two Axxx Q RPTs differential measurement mode is supported on the Hi Q RPT Gxxx Q RPTs with designators starting with G measure positive pressure relative to the TEST port that is connected to atmosphere Gxxx Q RPTs support measurement in gauge mode only RPM4s with two Q RPTs differential measurement mode is supported on the Hi Q RPT BGxxx Q RPTs with designators starting with BG measure positive and negative pressure relative to the TEST por
153. mode is RATE and DISPLAY function value is pressure rate of change per second Display mode is HI LO and value is high then low Display mode is DEVIATION and value is difference from current target x 7 gt Display mode is RPT and value is measurement of inactive RPT lt F gt Display mode is FREEZE and value is last captured reading Blank no character Current display mode is CLEAN Figure 3 MAIN RUN Screen Display Fields 2004 2007 DH Instruments a Fluke Company Page 16 3 L2 3 OPERATION FUNCTION DATA KEYPAD LAYOUT AND PROTOCOL The RPM4 has a function data keypad for local operator access to direct functions function menus and for data entry The Function Data keys allow very commonly used functions to be accessed directly by a single keystroke when pressed from the MAIN RUN screen see Section 3 1 1 The name of the function is on the bottom half of the key These keys enter numerical values when editing 1 li 1 1 3 The Menu Data keys provide access to function menus when pressed from the MAIN RUN screen The menu name is on the bottom half of the key The SETUP menu is for more frequently used functions see Section 3 4 The SPECIAL menu is for functions that are not generally used as a part of day to day operation see Section 3 5 These keys enter numerical values when editing 2 The Editing and Execution keys are for starting and suspending command execution cu
154. n NPT female Q RPTs of A70M or lower or DH500 F Q RPTs higher than A70M dl DH500 is a gland and collar type fittings for 6 35 mm 1 4 in coned and left hand threaded tubes DH500 is equivalent to AE 25 HIP HF4 etc The TEST and TEST ports on Q RPT modules of A7OM and lower are threaded into the aluminum Q RPT manifold Take care in making and breaking fittings not to cross thread or otherwise damage the threads It is recommended that an adaptor be installed in the in Q RPT manifold and make break operations be made on the adaptor rather than the manifold SDS Self Defense System Q RPT modules designated A7M or lower include the SDS Self Defense System SDS operated properly allows a the Q RPT TEST port to be left connected to a pressure up to 10 MPa 1 500 psi without damage to the Q RPT Do NOT attempt to use SDS in this manner without first becoming thoroughly familiar with its operation and limitations see Sections 3 2 7 5 5 5 3 5 4 Q RPT MODULE TEST AND TEST PORTS Q RPT modules of A70M and lower have both TEST and TEST ports Q RPT modules greater than A70M have a TEST port only See Section 5 6 Figure 8 for RPM4 Q RPT module TEST port configurations The TEST port is connected to Axxx absolute Q RPTs sole measurement port and to the high side of Gxxx or BGxxx gauge or bi directional gauge Q RPTs The TEST port of Axxx and BGxxx Q RPTs is connected to RPM4 s internal barome
155. n also be used to select the format but is not recommended for new designs The main difference between the classic and enhanced formats is that when using the IEEE 488 interface a query operator must be included in an enhanced command to yield a reply from the RPM4 When using the COM1 port in classic or enhanced mode or using the IEEE 488 port in classic mode every command has a reply which the host must wait for before continuing In addition the enhanced message format supports IEEE Std 488 2 syntax format and status reporting The default is the classic format In either format it is recommended that you start out a command sequence with the CLS command which clears all of the communication and error queues The basic commands are similar for both the classic and enhanced formats but the usage syntax format and status reporting are different Many RPM4 classic and enhanced commands are common with PPC2 PPCK and PPC3 Pressure Controller Calibrators 2004 2007 DH Instruments a Fluke Company Page 82 4 REMOTE OPERATION 4 3 1 CLASSIC PROGRAM MESSAGE FORMAT Each program message sent is also a query You can only send one program message to the RPM4 at time After sending any program message you must wait for the RPM4 to reply before sending another program message This reply will contain data or a numeric error message if the program message was invalid You must wait for this reply before issuing ano
156. n user levels By default the security system is set to low which includes access restriction to internal calibration coefficients and there is no password required to change the security level See Section 3 5 5 5 for information on the security level system As part of the RPMA startup determine the security level that is appropriate for the RPM4 and set a password if desired RPM4 is delivered with the security level set to low to avoid inadvertent altering of critical internal settings but with access to changing security levels unrestricted It is recommended that the low security level be maintained at all times and password protection be implemented if control over setting of security levels is desired Page 11 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL 24 2 3 8 TURN OFF ABSOLUTE AND NEGATIVE GAUGE MODE AXXX RPT If your RPM4 has one or two Axxx absolute Q RPTs it is able to operate in gauge negative gauge and absolute measurement modes see Section 3 3 3 If the RPM4 will be used in gauge mode only the other measurement modes be turned off so they are no longer accessible Turning off modes that are not needed can avoid confusion and or accidental use of the wrong measurement mode See Section 5 2 5 for complete information on turning off absolute and negative gauge measurement modes Turn off absolute and negative gauge mode if desired 23 9 SDS FULL TIME OFF
157. nal device to the RPM4 COM port e In absolute measurement modes Allow the RPMA to stabilize at atmospheric pressure and ambient temperature for 10 to 15 minutes before running AutoZ O OPERATION s The AutoZ function and values are Q RPT AND measurement mode gauge negative gauge or absolute specific dl To RUN the AutoZ routine that rezeroes the Q RPT use AutoZ see Section 3 3 9 To access the RPM4 AutoZ function press SPECIAL lt 1AutoZ gt The display is 1 Active Q RPT designator 2 Indication of active measurement mode lt abs gt for absolute loff 2view Hi lt gage gt for gauge and negative gauge lt dif gt for differential 3edit abs ON 3 Indication of whether AutoZ is currently ON or OFF for this Q RPT and measurement mode 2 3 Select 1off2 or 1on to change the AutoZ status for the current Q RPT and measurement mode from ON to OFF or vice versa AutoZ ON is indicated by lt z gt in the MAIN RUN screen top line fourth character from the right When AutoZ is OFF the character ie blank Select lt 2view gt to view the current value of Por for the active Q RPT and measurement mode Pre Should be zero when the RPM4 is new or has just been calibrated should be roughly equal to atmospheric pressure for absolute Q RPT operating in gauge mode Page 61 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL Select lt 3e
158. nators of Q RPTs in an RPM4 System 20 Settings and What They Are Specific To Range Measurement Mode Q RPT System 21 Summary of RPM4 Function Key Operation enne 25 Settings Made by AutoRange iii 31 Autoz ON and OFP uter oues aede Ca Rn Re RAM spa ue ee a Rb 60 Security LOVENS mE 70 UNIT Function Available Units of 72 READRT Display Update Rates ins 74 Biz cl RM 79 Reset Cal e e d a doe ea lee ee dea ne ne ane 80 Reset LES 80 COM Pin Designations and Connections ssssssssseeseneeennene enne nene 81 COM DB 9F Pin Designations sise 82 Program Message List nec ected dee Eire re oie dels 85 Error s and Descriptions anm anu ee ou ed 86 8 Bit Status Byte Register is 108 8 Bit Standard Event Register ir 110 8 Bit Ready Status Register sir 110 Program Messager List aet AE RR 111 Calibration Point Sequence Standard Class and 5 119 Calibration Point Sequence Standard Class BGxxx 120 Calibration Point Sequence Standard Class BA100K 120 Calibration Point Sequence Premium Class and Gxxx 121 Calibration Point Sequence Premium Class BGxxx
159. nced functions with a high level of operator discretion The local operator interface is through a 2 x 20 character alphanumeric display a function data keypad a cursor control pad and a Ready Not Ready indicator Remote communications are by RS232 COM1 and IEEE 488 See Section 4 for information on remote communication 3 11 MAIN RUN SCREEN The RPM4 MAIN RUN screen is its home display that is reached on power up and from which other functions and menus are accessed It is the very top level of all menu structures The MAIN RUN screen is where RPM4 is left in normal operation It displays the current measured pressure as well as a variety of additional information if desired Figure 3 and its legend summarize the RPM4 MAIN RUN screen fields and their functions gt RPM4 has screen saver function which causes the display to dim if no key is pressed for 10 minutes Pressing a key restores full power to the display The screen saver time can be changed or screen saving can be completely suppressed see Section 5 5 51 Page 15 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL 3 456 PRESSUREIUNITM hzRR DDISPLAYFUNCIONnn nn 1 PRESSURE1 Measured Displays pressure Numerical pressure value and sign pressure measured by the Intermittently flashes lt SDS active Q RPT CLOSED gt when the Q RPT is shut off from the TEST port by SDS 2 UNIT Unit of Identifies unit of Pre
160. nd from host computer or cycle RPM4 power 4 4 4 4 Measured pressure display or other displays have too much not enough resolution Resolution setting needs to be changed Change resolution setting 3 4 2 Can t increase resolution to level desired in AutoRanged range Resolution setting is limited when AutoRanging under 10 of Q RPT default range Operation is normal Table 6 Values that should be non zero are displayed as zero Resolution setting needs to be increased to view significant digits Change resolution setting 3 4 2 Keypad presses make undesired sounds or NO sounds Keypad sound settings are incorrect Use keypad function to set keypad sounds as desired 3 5 5 2 Bottom line of display has changed and you want to change it back The DISPLAY function has been used to change the display Use DISPLAY to set bottom line to desired display 3 3 6 Second line of display is lt PPC3 EXT DEV gt and front keypad is locked out The RPM4 has been initialized as an external device to a PPC3 pressure controller and is still in external device mode Cycle RPM4 power to take it out of external device mode and restore local operation 3 2 5 Bottom line of display is blank DISPLAY mode is clean Operation is normal Use DISPLAY to change bottom line display if desired 3 3 6 The pressure units available under the UNIT function key are not the ones yo
161. nits US or SI units depending on whether the RPM4 has been factory set as US or SI see Section 3 3 2 RPM4 also supports many commonly used units other than those included in the default set up These units can be made available for active selection by customizing the UNIT function using SPECIAL lt 6PresU gt This allows RPMA to offer a very wide selection of units while simplifying day to day operation The typical user customizes the UNIT function key to support his her six most commonly used units O OPERATION To customize the UNIT function key from the MAIN RUN screen press SPECIAL lt 6PresU gt The display is 1 Entry field to specify which unit position 1 to 6 of the UNIT function key menu is to be changed Set up unit 6 Enter the number of the unit position that you would Unit 6 1SI 2other like to change The display becomes 3altitude 4user Select the desired pressure unit category SI units include units based on SI units such as mmHg then select the desired unit from the unit menu The units of measure available are listed in Table 9 Table 9 UNIT Function Available Units of Measure lt 20THER gt lt 3ALTITUDE gt lt 4USER gt lt 1Pa gt ipsi lt ifeet gt lt 2hPa gt lt 2psf gt lt 2meters gt lt 3kPa gt lt 3inHg gt lt 4MPa gt lt 4inWa gt lt 5mbar gt lt 5kcm2 gt lt 6bar gt lt 6Torr gt lt 7mmHg gt lt mTor gt lt 8mmWa gt If lt 4 gt is selected
162. nsiren 12 2 3 10 PARALLEL MEASUREMENT 12 2 4 220 12 2 4 1 SWITCH POWER pm M 12 2 4 2 CHECK PRESSURE MEASUREMENT OPERATION weld 2 4 2 1 CHECKING ABSOLUTE MODE PRESSURE MEASUREMENT A 2 13 2 4 2 2 CHECKING GAUGE MODE PRESSURE MEASUREMENT 2 2 2 13 2 5 SHORT TERM STORAGE 5e saena aarne aaaea 14 OPERATION de raisonner eat its 15 3 1 I A iie 3 1 1 MAIN RUN SCREEN 8 3 1 2 FUNCTION DATA KEYPAD LAYOUT AND 2 17 3 1 3 REMOTE ENT ENTER 1 1 nunne natn than ana nanasa e ninenin na 18 3 1 4 SOUNDS rmrmenanenennennnnnenennes 3 2 GENERAL OPERATING PRINCIPLES 3 2 1 PRESSURE READY NOT READY Page 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL 3 2 2 GAUGE AND NEGATIVE GAUGE MODES WITH AN AXXX ABSOLUTE Q RPT DYNAMIC COMPENSATION FOR ATMOSPHERIC PRESSURE cents 19 3 2 3 MULTIPE RANGES Q RPTS AUTORANGE AND INFINITE RANGIN
163. nstruments a Fluke Company Page 54 3 OPERATION OQ OPERATION To access the stability setting adjustment press Stability Hi SETUP lt 3stab gt The display is 0 020 Pa Edit the desired stability limit setting if desired ENT activates the stability limit for the active range and returns to the main run screen Press ESC to return to the MAIN RUN screen with no change to the stability limit The stability setting is range specific stability setting made in one range does affect other ranges 3 4 4 lt AUL gt UPPER O PURPOSE To set the upper and lower pressure limit values for a pressure range and measurement mode O PRINCIPLE The UPPER LIMIT function provides the user with settable pressure limits at which an alarm sounds Absolute and gauge measurement modes see Section 3 3 3 O PRINCIPLE have upper limits only Negative gauge mode and the BA100K also have a lower limit When the limit is reached RPM4 s beeper sounds intermittently as long as pressure is outside the limit The UPPER LIMIT function has two purposes First when UL is set to its default value it serves as a warning that the maximum pressure of the active range and lower pressure in negative gauge mode is about to be exceeded Second UL can be set by the user to a value other than the default value to provide an alarm that a specific pressure limit has been exceeded This feature is often used to help protect an external device
164. o 7 MPa 1 000 psi and in the AutoRange range of 2 1 MPa 300 psi 2004 2007 DH Instruments a Fluke Company Page 120 5 MAINTENANCE ADJUSTMENTS AND CALIBRATIONS Table 25 Calibration Point Sequence Premium Class 1 and Gxxx Q RPTs CALIBRATION POINT POINT SEGMENT NO OF SPAN Ascending 6 30 a 9 60 In absolute mode lowest point that be set reliably by the reference piston gauge Zero vented in gauge mode absolute Q RPTs that will NOT be used in absolute or negative gauge measurement modes may be calibrated in gauge measurement mode with a gauge pressure standard absolute Q RPTs calibrated in gauge measurement mode should be used in gauge mode only see Section 5 2 5 Table 26 Calibration Point Sequence Premium Class 1 BGxxx Q RPTs CALIBRATION POINT POINT SEGMENT NO OF SPAN Ascending 6 50 8 609 O 9 T095 44 1 100 96 The BG15K span is 15 to 15 kPa 30 kPa total Therefore 0 is 15 kPa 25 is 7 5 kPa 100 is 15 kPa etc BGxxx bi directional gauge Q RPTs that will not be used in negative gauge measurement mode may be calibrated in gauge positive pressures measurement mode only Use the Premium Class gauge mode Gxxx calibration point sequence see Table 25 BOx Q RPTs calibrated in gauge measurement mode only should not be used in negative gauge mo
165. obtains additional details about an error that has occurred If the user receives an ERR reply or the enhanced mode is enabled using the IEEE 488 interface and an error has been detected the error is put into a FIFO Error Queue The ERR program message pulls and replies the oldest error message available In classic mode only the most recent error can reside in the queue is replied if there are no error messages left If an error occurs in enhanced mode using the IEEE 488 interface no reply is generated even if the command was a query Example Query sent ERR enhanced Query reply Numeric argument missing or out of range Example Sent ERR classic Reply Numeric argument missing or out of range See Also 4 4 2 2004 2007 DH Instruments a Fluke Company Page 92 4 REMOTE OPERATION GPIB Purpose Read or set the GPIB interface address Command GPIB Query GPIB Classic GPIB Defaults GPIB 10 Arguments Addr The address of the IEEE 488 GPIB interface 1 to 30 Remarks The GPIB address is changed following the reply of this command Each device on a GPIB interface bus requires a unique address Example sent GPIB 21 enhanced Query reply 21 No reply if GPIB 488 Example
166. ode 3 Pressure unit of measure specified in AutoRange AutoRange A700K Hi 4 AutoRange full scale pressure in gauge mode and absolute kPa 300g 100a mode if available Absolute mode only if AutoRange measurement mode is absolute and full scale is less than 100 kPa 14 5 psi Gauge mode only if the Q RPT is a Gxxx or BGxxx or an Axxx 3 with absolute mode turned off 4 If the RPM4 has two Q RPTs and you would like to select the other one for the AutoRange the cursor control keys may be used to toggle between Q RPTs selections if both Q RPTs can handle the specified AutoRange Accept proposed AutoRange To accept the proposed AutoRange and go to the MAIN RUN screen with the AutoRange range active press ENT or AutoRange To modify the AutoRange full scale measurement mode or pressure unit of measure use ESC to back through the AutoRange screens and make changes To verify or confirm the range from the MAIN RUN screen use or RANGE to view the active range see Section 3 3 1 See Table 6 for a listing of all selections and settings affected by AutoRange and their default values The BA100K Q RPT cannot be AutoRanged 2004 2007 DH Instruments a Fluke Company Page 32 3 OPERATION 3 3 5 LEAK CK O PURPOSE To run an automated leak check routine that determines the leak rate of the system connected to the RPM4 active Q RPT TEST port O PRINCIPLE The LEAK CHECK function is provided
167. ode the measured pressure is the average of the readings of the two Q RPTs Parallel measurement mode is considered a third Q RPT designated HL combination of Hi and Lo Once it has been set up the HL Q RPT can be selected using the RANGE key and operated with all the features of a Hi or Lo Q RPT When setting up parallel measurement the Hi and Lo Q RPTs can be suppressed so that only the HL Q RPT is active This feature is used when the RPM4 will always be used in HL mode Parallel measurement mode is set up using SPECIAL lt 7internal gt lt 3RPT2x gt see Section 3 5 7 3 3 25 USING WTH A PPC3 CONTROLLER CALIBRATOR RPMA can be integrated as a reference pressure measuring device in a PPC3 Pressure Controller Calibrator System See the PPC3 Operation and Maintenance Manual for information on setting up RPM4 to operate as the PPC3 s external device Before an RPM4 is used with a PPC3 the following settings should be made SDS Close SDS on all Q RPT modules on which SDS is available see Section 3 2 7 Head If the RPM4 TEST port is at a different level than the PPC3 s TEST port AND the RPMA will be used in absolute measurement mode set the RPM4 head height to the PPC3 s TEST port level so that RPM4 is corrected to indicate the pressure at the level of the PPC3 TEST port see Section 3 3 7 Page 21 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL AutoZ sure A
168. on ON and OFF full time for the Hi or Lo Q RPT See Section 3 2 7 for complete information on RPM4 s SDS Self Defense System feature O PRINCIPLE SDS is self defense system to protect RPM4 Q RPTs from overpressure see Section 3 2 7 Normally opening and closing SDS is performed automatically by the RPM4 or by the operator using the SDS key SPECIAL lt 4SDS gt gives further control over the SDS function This includes a the possibility of temporarily opening or closing SDS on either the Hi or Lo Q RPT see Section 3 5 4 1 and b turning OFF SDS so that it is open full time and RPM4 can be operated as if SDS were not installed see Section 3 5 4 2 The temporary opening or closing of SDS allows the SDS open closed state to be set immediately to the desired state Following the change normal automated operation of SDS and control using the SDS key is still valid This function is often used to open SDS on the inactive Q RPT in PRM4s with dual Q RPTs Setting the SDS function to full time OFF eliminates the SDS function completely until is set to full time ON again 354 1 lt OPENCLOSE gt O OPERATION See Section 3 2 7 for complete information on RPM4 s SDS Self Defense System feature To temporarily open or close the SDS of the Hi or Lo Q RPT press SPECIAL lt 4SDS gt lt itemp open close gt If the RPM4 has two Q RPTs and both have SDS the Q RPT must then be selected The next display
169. on factors to convert from Pa see Section 7 2 1 O OPERATION To change the active pressure unit of measure for a range press UNIT from the MAIN RUN screen while the range is active The display is The cursor is on the number corresponding to the active pressure unit of measure for the active range To change the pressure unit of measure select the desired unit Making the selection returns to the MAIN RUN screen with the selected unit active gt The pressure unit of measure selected is range specific When given range all functions and settings are represented in the current measurement unit for that range However certain internal and or metrological functions e g Q RPT calibration coefficients are always represented in Pa regardless of the current range unit When the current unit is an altitude unit the range and upper limit indications are in kPa if the unit is meters and psi if the unit is feet ft See Section 7 2 1 for tables of the conversion factors used by RPM4 If the pressure unit selected is inWa inches of water the reference temperature for water density must we specified in a separate menu choices are 4 C 20 C 60 F No reference temperature selection ie necessary for the unit mmWa as the only reference temperature commonly used for mmWa is 4 C The default pressure units of measure available under the UNIT function depend on whether the RPM4 has been set up as an SI or US ve
170. onds and press ENT Press ENT again when ready to start the leak test The leak test display is 1 2 1 Standard MAIN RUN screen first line showing measured pressure 957 84 2 Active Q RPT position indicator E Leak testing 13 s 3 Indication that leak test is running and countdown of time remaining 3 Page 33 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL ESC can be used to abort the running leak test ENT while the leak test is running restarts the leak check timer When the leak check timer countdown has completed RPM4 beeps three times and the leak check results screen is displayed 2 1 Total pressure change from start to finish of leak check time 2 Indicator of Q RPT used to run the leak check AP 0 61 Hi 3 Average rate of change of pressure over the check Rate 0 06 kPa sec time period AP time in seconds t 3 From the leak check results screen press ENT to repeat the leak test Press ESC to return to leak check main menu and exit to the MAIN RUN screen To view the results of the most recently completed leak check press lt 2view gt If NO leak check data is stored i e if the RPM4 has never run a leak test or a reset has cleared previous leak test results the results screen displays lt Data NOT available gt briefly and returns to MAIN RUN screen Press ENT or ESC to return to the MAIN RU
171. ope is the new value of PM Press SPECIAL lt 8Cal gt 1Hi RPT gt 2Lo RPT gt lt 2edit gt and write the new calibration date and the new values of PA and PM for the Q RPT calibrated see Section 5 2 7 If this is an Axxx Q RPT and the calibration was performed in gauge mode turn absolute and negative gauge modes OFF to avoid their being used after the calibration Calculate as left data for the calibration if desired following as left reading non corrected reading new PM new PA Perform additional verification pressure runs as desired 5 3 ADJUSTMENT OF ON BOARD BAROMETER PURPOSE To adjust the output of the on board barometer see Section 1 2 2 2 RPM4 s that have only G20OK Q RPTs or G15K or are NOT equipped with an on board barometer O PRINCIPLE The on board barometer output can be adjusted using PA and PM values in the same manner as Q RPTs see Section 5 2 1 1 sf The on board barometer is a low accuracy sensor used only for measuring changes in atmospheric pressure over short periods of time see Section 3 2 2 and the line pressure for GISKK and BG15K line pressure compensation RPM4 measurement uncertainty does not depend on the measurement uncertainty of the on board barometer O OPERATION To edit the values of PA and PM for the barometer press SPECIAL 8cal lt 3barometer gt Pressing ENT steps through displays of the cal
172. or liquid Q RPTs less than 7 MPa full scale Allow 10 cm gas only Pressure Connections Q RPTs up to A70M Q RPTs A70M TEST 1 8 in NPT F DH500 F TEST 1 8 in NPT F None VENT or ATM 10 32 UNF VENT 10 32 UNF ATM DH500 is a gland and collar type fitting for Gmm 1 4 in coned and left hand threaded tubes equivalent to F25OC HIP HF4 etc Included on all gas operated Q RPT modules of A7M or lower Isolates Q RPT module TEST port and vents it to atmosphere SDS is not included with liquid filled Q RPTs Maximum Working Pressure 104 Q RPT maximum Maximum Pressure Without Damage 125 Q RPT maximum Maximum SDS Protection Pressure 10 MPa 1 500 psi Without Damage 13 MPa 2 000 psi Available must be specified Self Defense System SDS Pressure Limits CE Mark 12 22 PRESSURE MEASUREMENT SPECIFICATIONS 1 2 2 1 QUARTZ REFERENCE PRESSURE TRANSDUCER RPM4 be configured with one or two quartz reference pressure transducer Q RPT modules to measure pressure The type Axxx Gxxx BGxxx BAxxx and range of the Q RPT module s determines the RPM4 measurement specifications All Q RPTs whose maximum pressure is over 200 kPa 30 psi are of the absolute pressure type Axxx using an evacuated permanently sealed reference Axxx Q RPTs can measure absolute gauge and negative gauge pressure Gauge pressure with an Axxx Q RPT is defined by offsetting atmospheric pressure and applying d
173. or system on which RPM4 is being used to measure pressure For example it might be set just over the full scale of a device under test DUT that is being calibrated Note that using AutoRange automatically sets the UL to just above the AutoRange full scale see Section 3 3 4 s The default upper limit is 105 of AutoRange span or 102 of Q RFT default maximum range whichever is lower The default lower limit negative gauge mode only is 110 kPa 16 psi except with the BG15K Q RPT in which the default lower limit is the negative equivalent of the upper limit The default lower limit of the BATOOK Q RPT ie 66 kPa 9 6 psi dl In parallel measurement mode see Section 3 5 7 2 the default and maximum UL is the UL of the Lo Q RPT In differential measurement mode see Section 5 5 5 1 UL has upper and lower limits The default upper differential UL is the maximum pressure of the Hi Q RTP The default lower UL is the negative value of the upper limit In differential measurement mode the ULs on the Lo Q RPT and Hi Q RPT default range are also active so that line pressure Lo Q RPT and total pressure Hi Q RPT upper limit can be set and monitored in addition to a differential limit Page 55 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL O OPERATION To view or edit upper and lower limits press SETUP lt 4UL gt If the current measurement mode is absolute or gauge there is an uppe
174. or the active range and measurement mode negative gauge or differential measurement mode only Command LLn limit Classic LLn limit Optional Suffix n The active Q RPT is assumed if no suffix is given 47 Specify the Hi Q RPT if the Hi and Lo Q RPTs NOT OFF and the HL Q RPT is not active Specify the HL Q RPT if the Hi and Lo Q RPTs are OFF 2 Specify the Lo Q RPT if the HL Q RPT is not active and measurement mode is not differential 7 Specify the HL Q RPT if the HL Q RPT is active Arguments limit The lower pressure limit for the current pressure range in the specified Q RPT s current unit of measure unit and measurement mode Value is always a negative value of gauge pressure Remarks Negative gauge and differential modes in RPM4 have a lower limit If the pressure is less than the lower limit the pressure display flashes This feature should always be used to prevent accidental over under pressure of a device under test Example sent LL 4 enhanced Reply 4 kPa no reply if IEEE 488 Example sent LL 4 enhanced Reply 4 kPag Example Sent LL 4 classic Reply 4 kPa g Errors ERR 6 The limit argument is invalid 10 The suffix is invalid ERR 23 The mode must be negative gauge to specify a lower limit See Also UL MMODE 3 4 4 3 8 3 LOCAL Purpose Returns control to the RPM4 front panel Command LOCAL Classic LOCAL Remar
175. ort Lo Q RPT IEC 320 C13 15 VENT or ATM Pressure Port Hi Q RPT 9 Fan 16 Product Label bottom of case Figure 2 Rear Panel POWER CONNECTION 23 31 85 TO 264 VAC 50 60 HZ VAC POWER Check that the RPM4 power switch is OFF Connect the supplied power cable to the rear panel power module Connect the other end of the power cable to an electrical supply of 85 to 264 VAC 50 60 Hz 23 32 BATTERY PACK Charge the battery pack fully see Section 3 2 6 Connect the RPM4 12VDC power connection on the rear panel of the RPM4 to the 12 VDC power connection on the battery charge pack using the cable supplied with the pack we See Section 3 2 6 for additional information on battery charger pack operation and maintenance Page 9 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL 2 3 4 REMOTE ENT CONNECTION FOOTSWMTCH OR OTHER SWITCH Connect the optional remote ENTER footswitch if available or a user supplied switch fitted to the optional cable see Section 7 1 Connect the cable to the RPM4 rear panel connection labeled REMOTE ENTER Activating the switch is equivalent to pressing the ENT key on the front panel see Section 3 1 3 2 3 5 CONNECTING TO MEASURE PRESSURE TEST AND TEST PORTS Using a pressure connecting hose or tube of appropriate pressure rating connect the device or system to be tested to the RPM4 TEST port The RPM4 TEST connection is 1 8 i
176. other RPM4 functions such as UNIT MODE and DISPLAY When parallel measurement mode is set up the resulting HL Q RPT can be a third Q RPT in addition to the Hi and Lo RPTs It is also possible to make the HL Q RPT the sole Q RPT suppressing the Hi and Lo Q RPTs This feature is used when an RPMA will always be used in parallel measurement mode and the availability of the individual Hi and Lo Q RPTs is not desired SPECIAL lt 7internal gt lt 3RPT2x gt is used to set up or suppress parallel measurement mode in RPM4s that support it In parallel measurement mode the maximum pressure is the maximum pressure of the Lo Q RPT OPERATION F Parallel measurement mode is only available on RPM4s with two Q RPTs of the same type Axxx Gxxx BGxxx To access the parallel measurement mode enable disable function press SPECIAL lt 7internal gt lt 3RPT2x gt The cursor is on the number corresponding to the current setting Select lt 1 to disable parallel measurement mode This will eliminate the HL Q RPT Select lt 2on gt to enable parallel measurement mode This creates the HL parallel mode Q RPT The Hi and Lo Q RPTs are also still available Select 3on w Hi amp Lo RPT gt to enable parallel measurement mode and disable access to the Hi and Lo Q RPTs individually This creates the HL parallel mode Q RPT and makes it the sole Q RPT available for selection When using parallel measurement mode if RPM4 de
177. ple sent ZOFFSET1 2 1 0 0 enhanced Query reply 2 10 Pa 0 00 Pa 0 00 Pa Example Sent ZOFFSET 97293 1 3 02 0 classic Reply 97293 10 3 02 0 00 Errors ERR 6 One of the arguments is out of range See Also 3 5 1 45 STATUS REPORTING SYSTEM The RPM4 status reporting system is used to track and report system status and errors It follows the model of the IEEE Std 488 2 and works for the COM1 and the IEEE 488 port with slight differences The RPM4 be programmed to respond to various status conditions by asserting the SRQ of the IEEE 488 interface The COM1 port cannot be supported in such way so polling must be used 4 5 1 ERROR QUEUE The RPM4 keeps track of remote errors by using an error queue If an error occurs it is pushed onto the Error Queue If you are using the COM1 port the error number is immediately replied in the form ERR nn where nn is the error code from 0 to 99 The ERR or ERR query can then be used to pull the error from the Error Queue in it s descriptive text format If you are using the enhanced program message format the Error Queue will accumulate errors until full unless they are pulled from the queue If you are using the classic program format the Error Queue is cleared every time a new program message is received 4 5 2 STATUS BYTE REGISTER The RPMA contains an 8 bit Status Byte Register that reflects the general status of the RPM4 T
178. pped with SDS SDS closes shutting off the TEST port see Section 3 2 7 If the Q RPT is Gxxx or BGxxx the TEST TEST bypass valve is opened see Section 5 6 Figure 8 The overpressure function also logs the time and date of the overpressure condition in both user and factory logs to assist in incident diagnosis see Section 3 5 7 5 To recover from an overpressure condition cycle RPM4 power Be sure to correct the condition that caused the overpressure before cycling power lt gt This feature not available at the time of this manual s release Check www dhinstruments com for new RPM4 embedded software releases and manual updates 3 5 SPECIAL O PURPOSE SPECIAL accesses a menu of 4 functions and features that are less commonly used or not normally used in regular operation O OPERATION Press SPECIAL from the MAIN RUN screen to access the SPECIAL menu The display is lAutoZ 2remote 3head 4505 5prefs 6Punit 7intern 8 1 9reset Some screens such as the SPECIAL menu go beyond the two lines provided by the display This is indicated by a flashing arrow in the second line of the display Press the cursor control keys to move the cursor to access the lines that are not visible or directly enter the number of the hidden menu choice if you know it SPECIAL menu choices include lt 1AutoZ gt Manage AutoZero function for the active Q RPT see Section 3 5 1 lt 2remote gt Vi
179. pplied to the TEST port does NOT exceed the maximum acceptable value for the Q RPT Select 1no to return to the main run screen without OPENING SDS select 2yes to OPEN SDS and return to the main run screen with SDS OPEN the active Q RPT open to the TEST port Opening SDS with a pressure greater than Pmax applied to the test port may cause overpressure damage to the Q RPT In differential and parallel measurement modes opening SDS acts simultaneously on BOTH THE Hi AND Lo Q RPTs see Section 3 3 8 1 The Pmax pressure is the Lo RPT Be sure to check BOTH Q RPT TEST ports are at a safe pressure before opening SDS The SDS key is also the 2 key which is pressed to select lt 2Yes gt to OPEN SDS Thus SDS can be OPENED by two rapid presses of SDS Use this feature to conveniently OPEN SDS but always check that the pressure connected the TEST port does NOT exceed Pmax before doing so When changing ranges causes change of active Q RPT SDS is automatically CLOSED for the Q RPT that is being changed from leaving the inactive Q RPT with SDS CLOSED The Lo and Hi Q RPTs SDS if present can be controlled directly regardless of which Q RPT is currently active see Section 3 5 4 SDS can be permanently opened so operation is as if SDS were not present see Section 3 5 4 2 Page 45 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL 3381 SDSINDIFFERENTIAL A
180. press SPECIAL lt 7internal gt lt 1baro gt The display is in the active pressure unit of measure see Section 3 3 2 The display resolution is fixed to 0 01 Pa or its equivalent 3 5 7 2 lt 2READRT gt O PURPOSE To turn ON and OFF RPM4 s automated rate of change dependent reading integration rate feature O PRINCIPLE To obtain maximum resolution from RPM4 Q RPT pressure measurements an integration time of about 1 2 second per reading is used In most situations maximum precision is needed when pressures are stable so a relatively slow display update rate presents no disadvantage However when pressure is changing quickly more rapid pressure updates are usually more important than obtaining maximum precision on individual readings The RPM4 read rate function automatically adjusts pressure measurement integration time depending on the rate of change of pressure When pressure is changing rapidly reading rate is increased When pressure is evolving slowly reading rate is decreased and maximum precision is obtained When the automated read rate function is ON three pressure rate of change dependent read rates are used The result is three display update rates Table 10 READRT Display Update Rates PRESSURE DISPLAY RATE OF CHANGE UPDATE gt 3 of range span s gt 0 5 and lt 3 of range span s lt 0 5 of range span s For situations in which maximum reading precision is desired regardles
181. pressure controller the RPM4 front panel keypad is locked out and the second line of the display becomes lt PPC3 EXT DEV IDLE gt if RPM4 is initialized by PPC3 but not currently in use lt PPC3 EXT DEV ACTIVE if RPM4 is initialized by PPC3 and is currently in use After using an RPM4 as an external device for a PPC3 cycle power to return to the previous RPM4 settings restore front keypad capability and return to the normal main run screen 2004 2007 DH Instruments a Fluke Company Page 22 3 OPERATION 3 2 6 USE OF THE 12VDC BATTERY CHARGER PACK An optional 12VDC battery charger pack is available to supply power to RPM4s 12VDC power connection see 1 2 3 The battery charger pack combines the battery and the battery charger To Charge the Battery The battery may be charged while the battery charge pack is connected to the RPM4 To charge the battery connect the battery charger pack to a 100 to 240 V 50 60 Hz power supply using the supplied power cable and turn on the charger power switch The green CHARGE indicator light goes on to indicate that battery charging is in progress Allow 14 to 16 hours for the battery to charge fully When the battery is fully charged the CHARGE indicator light flashes When the battery charger power switch is in the ON the battery is connected to the charger not the 12VDC output When the battery charger switch is in the OFF position the CHARGE indicator light goes off and 12VDC
182. r limit only The display is Upper limit Hi 1 Entry field for upper limit value in active pressure unit of 204 000 kPa a measure and measurement mode 1 Edit the upper limit value as desired The maximum upper limit is 105 of span in an AutoRange range or 102 of default Q RPT full scale whichever is smaller Press ENT to return to the MAIN RUN screen with the new upper limit active Press ESC to return to the MAIN RUN screen with no change to the upper limit If the current measurement mode is negative gauge there is an upper limit and a lower limit The display is 1 Upper 104 00 Hi Lower 110 00 KkPa g 2 1 Entry field for upper limit value 2 Entry field for lower limit value and active range pressure unit of measure and measurement mode indication Edit the upper and lower limit values as desired Use the cursor control keys to move between the two edit fields The lower limit must be a negative value Press ENT to return to the MAIN RUN screen with the new upper and or lower limit active Press ESC to return to the MAIN RUN screen with no change to the limits When the upper or lower limit has been exceeded the display of current pressure flashes and a buzzer sounds for 3 seconds on 2 seconds off intervals Change the pressure applied to RPM4 so that it is within the upper and or lower limit to return to normal operation Upper limit values are epecific to each range and measurement mode Be
183. r repaired 242 22 CHECKING GAUGE MODE PRESSURE MEASUREMENT Make sure that the TEST port is open to atmosphere Press the MODE function key and select gauge mode Use UNIT to change the pressure unit if desired see Section 3 3 2 If SDS is CLOSED lt SDS CLOSED flashes over the display of pressure on the top line of the display OPEN SDS Press SDS 2yes to OPEN SDS Do NOT OPEN 5 5 with a pressure higher than the maximum pressure of the Q RPT applied to the TEST port Damage to the Q RPT may result The value indicated should be near zero It is normal for the Q RPT to indicate a value other than zero when vented when gauge mode is first entered or the range is changed Press AutoZ This runs AutoZ to zero the Q RPT reading see Section 3 3 9 1 Upon return to the main run screen observe that the indication of measured pressure has zeroed If the display fails to zero properly RPM4 may need repair Page 13 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL 2 5 SHORT TERM STORAGE The following is recommended for short term storage of RPM4 Vent the test port Switch power OFF 2004 2007 DH Instruments a Fluke Company Page 14 3 OPERATION H DH Instruments A Fluke Company 3 OPERATION 3 1 USER INTERFACE RPM4 is designed to offer a balance between simple straight forward operation and the availability of a wide variety of adva
184. r8 Stop Bit 1or2 The default is 2 400 E 7 1 for both COM1 and 2 The user can also specify one or two termination characters as well as define these characters These are referred to as Term1 and Term2 These define the characters that mark the end of commands that are sent to the RPM4 The RPM4 looks for an ASCII 13 carriage return to terminate a received command but responds with both and ASCII 13 carriage return and an ASCII 10 line feed There are no other options 352 2 lt 488 gt The IEEE 488 port s primary address can be set from 1 to 31 in this screen The factory default value is 10 Secondary addressing is not used or supported This address must not conflict with the address of any other device on the same IEEE 488 bus The receiving terminating character must be a line feed and EOI Carriage returns are ignored if received The RPM4 sends a line feed and asserts the EOI line to terminate a reply These settings are fixed to agree with IEEE Std 488 2 If you change the address the IEEE interface will reset PON and become idle 352 3 lt gt The RPM4 has two different syntax formats available for the remote program commands The classic remote command format is highly intuitive and conforms with previous DHI PPC and RPM products The enhanced remote command format generally uses the same commands as the classic format but in addition it follows the syntax format
185. rack mount using the optional rack mount kit 2 3 SETUP 2 3 1 PREPARING FOR OPERATION To prepare RPMA for check out and operation 9 Remove the plastic caps from the RPM4 rear panel pressure connections Remove the protective plastic sheet from the front panel display 6 Familiarize yourself briefly with the front and rear panels see Section 2 3 2 2 3 2 FRONT AND REAR PANELS 23 21 FRONT PANEL RPM Reterence Pressure Monitor y 5 1 Ready Not Ready Indicator 4 Cursor Control Keys 2 Display 5 Multi Function Keypad 8 Remote Activity Indicator Figure 1 Front Panel 2004 2007 DH Instruments a Fluke Company Page 8 2 3 3 2 INSTALLATION 23 22 REAR PANEL A10Ms BG15Kp 10 MPa 1500 psi 15 kPa gage 2 2 psi MAX e r PESTE TEST TEST 85 264 50 60Hz 5 y E ES a 6 b gt e et AA 60VA MAK FUSE M2SOVTIA y I 10 9 8 7 13 12 11 16 1 12VDC Power Supply 10 TEST Pressure Port Lo Q RPT Connection if Lo Q RPT present 2 Remote ENT Connector 11 TEST Pressure Port Lo Q RPT 3 IEEE 488 Connector if Lo QRPT present A100M only 4 COM Connector 12 TEST Pressure Port Hi Q RPT 5 COM Connector 13 TEST Pressure Port Hi Q RPT 6 Power Switch lt A100M only 7 Fuse 14 VENT lt 10 gt or gt A10M 8 Electrical Power Connector Pressure P
186. ranslation cannot be guaranteed In case of conflict between the English version and other language versions the English version predominates Products described in this manual are manufactured under international patents and one or more of the following U S patents 5 142 483 5 257 640 5 331 838 5 445 035 Other U S and international patents pending AutoRange AutoZ DH Instruments DH DHI CalTool COMPASS RPM4 QDUT Q RPT RPM4 and SDS are trademarks registered and otherwise of DH Instruments Document No 550129a 03 050815 Printed in the USA 2004 2007 DH Instruments a Fluke Company TABLE OF CONTENTS Instruments TABLE OF CONTENTS TABLE OF CONTENT S a daa TABLES QUEM NA ER UR V FIGURES oe e toate nada ne ABOUT TS MANU A Se Pre Ps ed nsc VII JNIEHODUGIION sente eee tante Deere SE 1 11 PRODUCT OVERVIEW a 1 12 SPECIFICATIONS usque 2 1 2 1 GENERAL 2 2 2 1 2 2 PRESSURE MEASUREMENT SPECIFICATIONS esses esee seen seien 2 1 2 2 1 QUARTZ REFERENCE PRESSURE TRANSDUCER Q RPT essent 2 1 2 2 2 ON BOARD BA
187. ration point sequences for Premium Q RPTs It is not required that the calibration pressure standard apply precisely the nominal pressure value of each calibration point as long as the exact value of the applied pressure is known Best results are obtained if the actual applied pressure is within 2 of the recommended nominal point 5241 STANDARD CLASS 5 See additional information in Section 5 2 4 concerning exercising the Q RPT and dwell time at pressure points Table 22 Calibration Point Sequence Standard Class and Gxxx Q RPTs CALIBRATION POINT POINT SEGMENT NO OF SPAN Ascending 100 B JE R Descending 8 2595 9 Lowest Pressure 1 In absolute mode the lowest point that can be set reliably by the reference piston gauge or atmospheric pressure for ranges A1 4M Zero vented in gauge mode Axxx absolute Q RPTs that will NOT be used in absolute or negative gauge measurement modes may be calibrated in gauge measurement mode with a gauge pressure standard Axxx absolute Q RPTs calibrated in gauge measurement mode should be used in gauge mode only see Sections 3 3 3 O PRINCIPLE 5 2 5 Page 119 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL Table 23 Calibration Point Sequence Standard Class BGxxx Q RPTs CALIBRATION POINT POINT SEGMENT NO OF SPAN Ascending 100 5 5 8 25 9
188. re measurement Incorrect pressure units and or measurement mode gauge or absolute Set desired pressure units and or measurement mode Consider reference temperature if unit is inWa 3 3 2 3 3 3 Q RPT calibration coefficients have been altered Check and correct calibration coefficients if needed 5 2 AutoZ has been run and turned ON with an incorrect standard for zero Check value of Ps Rerun AutoZ with a valid reference 3 5 1 Apparent inaccurate pressure measurement and lt h gt is displayed on top line of screen An unplanned head correction is active or head height or fluid is incorrect Operation is normal Remove or change head correction 3 3 7 Pressure applied is zero gauge but reading is NOT zero Need to run AutoZ to rezero in gauge mode Run AutoZ 3 3 9 Current measurement mode is absolute and RPM4 is indicating atmospheric pressure Check measurement mode setting and Set to gauge if gauge pressure measurements are desired 3 3 3 Pressure applied is atmospheric but RPMA indicates near zero Current measurement mode is gauge and RPM4 is indicating zero gauge pressure Operation is normal Check measurement mode setting and set to absolute if absolute pressure measurements are desired 3 3 3 A third Q RPT designated HL is available but RPM4 has only two Q RPTs Parallel measurement mode has been activated Operation is normal Turn off parallel me
189. re with an absolute quartz reference pressure transducer see Section 3 2 2 The temperature sensor is used for temperature compensation of the barometric sensor RPM4s that have only GIOOK or G200K Q RPTs or GI5K or BGxxx are NOT equipped with an on board barometer 5 5 5 Q RPT MODULE The Q RPT module is an integrated Quartz Reference Pressure Transducer Q RPT assembly The module includes a Q RPT brackets to hold the transducer interconnecting tubing a manifold with TEST TEST A70M and lower only and VENT on A100M and higher ports and SDS Self Defense System solenoid valves A7M and lower gas operated only A Q RPT provides very high precision low uncertainty pressure measurement The basic sensing principle is the measurement of the change in the natural oscillating frequency of a quartz tuning fork in response to changes in temperature and mechanical stress resulting from the change in pressure applied to a connecting bellows or bourdon tube Two independent quartz elements are used One quartz element is subjected to pressure related stress The other quartz element is used only to monitor temperature See Section 1 2 2 1 for Q RPT specifications See Figure 8 for pneumatic schematics of different Q RPT module configurations 5551 Hi Q RPT MODULE RPM4 is always equipped with a Hi Q RPT module The Hi Q RPT module is in the Hi Q RPT position It is always the higher range in two Q RPT RPM4
190. recommended sequence of pressure points in the range to be calibrated See Section 5 2 4 for information on the recommended calibration point sequence for various Q RPT types and classes 5222 OIL OR GAS OPERATED Q RPTS A14M AND HGHER Gas or oil operated piston gauge deadweight tester with the following characteristics Do not put oil or other liquide in Q RPT that is meant to be operated with gas Page 117 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL e Measurement uncertainty of 0 008 of reading for Standard Class Q RPTs or 0 005 of reading for Premium Class Q RPTs A standard with higher measurement uncertainty may be used but RPM4 measurement uncertainty may be degraded proportionally from published specifications e f the Q RPT is absolute and will be used in the absolute and or negative gauge measurement modes the reference must be able to apply absolute pressures Absolute pressures may be defined by adding atmospheric pressure measured by a barometer to gauge pressure defined by a piston gauge Axxx absolute Q RPTs that will not be used in absolute or negative gauge measurement modes as is very often the case for higher pressure Q RPTs do not require the application of absolute pressure for calibration and may be calibrated using a gauge pressure standard Axxx absolute Q RPTs calibrated in gauge measurement mode by applying gauge reference pressure valu
191. reentering the password Passwords can be up to six numbers in length and cannot start with a zero If lt 0 gt is entered the password is made inactive and the user will not be required to enter a password to access the user level menu This condition with a security level of 2lows is the factory default If there is an active password the RPM4 password entry screen appears RPM4A SNnnnn xx The user must enter the user defined password or the factory secondary Password password to proceed further The first field lt nnnn gt is the serial number of the RPM4 followed by a second field XX that represents the number of times that a secondary password has been used The second field xx increments each time a secondary password is used The third field lt gt is for user entry of the normal password The factory secondary password is available in case the user s password has been misplaced or forgotten t can be obtained by contacting DHI Authorized Service Center see Table 29 The factory secondary password ie different for all RPM4 s and changes each time it is used 3 5 6 6PUNIT O PURPOSE To customize the selection of pressure units of measure that are available in the UNIT key menu Page 71 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL O PRINCIPLE The UNIT function key makes available a choice of six default pressure u
192. rence pressure transducers Q RPTs Reset functions should only be used by qualified personnel with knowledge of reset consequences Reset functions should never be used experimentally O OPERATION To access the RESET menu press SPECIAL lsets 2units 3ATest lt 9reset gt The display is 4cal 5all RESET menu choices include lt iset gt to reset general system operating parameters see Section 3 5 9 1 lt 2units gt to reset unit of measure functions see Section 3 5 9 2 lt 3ATest gt to reset AutoTest parameters and clear the AutoTest data log see Section 3 5 9 3 lt 4cal gt to reset internal calibration coefficients and modes see Section 3 5 9 4 lt 5all gt to reset all settings except ID and security password to factory default values see Section 3 5 9 5 3591 lt ISETS gt O PURPOSE Sets most general operating parameters back to default values Does not affect calibration coefficients remote interfaces or AutoRange ranges The Reset Sets resets are itemized in Table 11 2004 2007 DH Instruments a Fluke Company Page 78 3 OPERATION Table 11 Reset Sets RESULT SEE SECTION UNIT Pressure unit of measure to first of the six available MODE Measurement mode to the native mode of the Q RPT RANGE Hi Q RPT default range HEAD 0 cm height and Nitrogen medium 3 3 Stability Limit 0 005 of Hi Q RPT default range 3 4 3 Upper Limit Hi Q RPT default range default val
193. rence in absolute mode ERR 10 Invalid suffix ERR 53 AutoZero is currently OFF See Also ZOFFSET AUTOZERO 3 5 1 2004 2007 DH Instruments a Fluke Company Page 90 4 REMOTE OPERATION CALAMB Purpose Read or set the on board barometer calibration Command CALAMB adder mult CalDate Query CALAMB Classic CALAMB adder mult CalDate CALAMB Defaults CALAMB 0 0 1 0 19800101 Arguments Adder The Barometer calibration adder PA in Pascal Mult The Barometer calibration multiplier PM from 0 1 to 100 CalDate The date of the calibration in the format YYYYMMDD Remarks The barometer calibration information can be accessed with this program message Using this program message overwrites the current calibration coefficients so caution must be used Changes made take effect immediately Example Cmd sent CALAMB 2 1 1 000021 20011201 enhanced Query reply 2 10 1 000021 20011201 Example Sent CALAMB 2 1 1 000021 20011201 classic Reply 2 10 1 000021 20011201 Errors ERR 6 One of the arguments is out of range See Also 3 5 7 1 5 8 1 Purpose Read or set the RS232 settings for the COM1 port Command COM baud parity data stop Query COM1 Classic COM1 baud parity data stop 1 Argum
194. reply DH INSTRUMENTS INC RPM4 us A350K BG15K Ver1 00 See Also ID IDN None Page 107 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL ZOFFSETn Purpose Read or set the AutoZ pressure offset for the specified or active Q RPT in the current measurement mode Command ZOFFSETn GaOffset AbsOffset DifOffset Query ZOFFSETn Classic ZOFFSETn GaOffset AbsOffset DifOffset ZOFFSETn Defaults ZOFFSETn 0 0 0 0 0 0 Gauge Q RPT ZOFFSETn 101325 0 0 0 0 Absolute Q RPT Optional Suffix n The active Q RPT is assumed if no suffix is given H Specify the Hi Q RPT 2 LO Specify the Lo Q RPT Arguments GaOffset The Q RPT pressure offset Poffset for Gauge measurement mode Pa AbsOffset The Q RPT pressure offset for absolute measurement mode Pa DifOffset The Q RPT pressure offset for differential measurement mode Pa Remarks The pressure offset Pa for the specified Q RPT Hi or Lo can be accessed with this program message There are separate offsets for gauge absolute and differential measurement modes but not all modes apply in all cases Gauge Q RPTs do not support AbsOffset DifOffset applies only to the Hi Q RPT Using this program message overwrites the current offset so caution must be used Changes made using this program message take effect immediately Exam
195. rrants for one year from purchase each new product sold by it or one of its authorized distributors only against defects in workmanship and or materials under normal service and use Products which have been changed or altered in any manner from their original design or which are improperly or defectively installed serviced or used are not covered by this warranty DH Instruments and any of its Authorized Service Providers obligations with respect to this warranty are limited to the repair or replacement of defective products after their inspection and verification of such defects All products to be considered for repair or replacement are to be returned to DH Instruments or its Authorized Service Provider after receiving authorization from DH Instruments or its Authorized Service Provider The purchaser assumes all liability vis a vis third parties in respect of its acts or omissions involving use of the products In no event shall DH Instruments be liable to purchaser for any unforeseeable or indirect damage it being expressly stated that for the purpose of this warranty such indirect damage includes but is not limited to loss of production profits revenue or goodwill even if DH Instruments has been advised of the possibility thereof and regardless of whether such products are used individually or as components in other products The provisions of this warranty and limitation may not be modified in any respect except in writing signed b
196. rsion indicated by SI or US at bottom right of introduction screen The choice of six units available under the UNIT function can be customized from a wider selection by the user see Section 3 5 6 The units available under the UNIT function can be reset to default by reset see Section 5 5 9 2 3 3 3 MODE O PURPOSE To set the measurement mode absolute gauge negative gauge or differential for the active range For information on selecting the unit of measure see Section 3 5 2 O PRINCIPLE RPM4 supports simple one step switching between up to four different measurement modes Absolute Measures pressure relative to vacuum zero is hard vacuum Range is from zero absolute to full scale Page 27 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL Gauge Measures pressure relative to atmosphere zero is ambient pressure Range is from zero gauge to full scale full scale must be greater than zero Negative Gauge Measures pressure relative to atmosphere zero is ambient pressure Range is positive and negative from zero negative to minus one atmosphere and positive to full scale With a BGxxx RPT negative range is the negative equivalent of the positive range Differential Available only for the Hi Q RPT in RPM4s equipped with two Q RPT modules of the same type Axxx Gxxx BGxxx Measures the difference between the Hi and the Lo Q RPT Differential Hi Lo Differential measure
197. rsor control in menus and editing entries Figure 4 Keypad Layout Pressing the ENT key generally causes execution or forward movement in the menu tree Pressing the ESC key moves back in the menu tree and or causes execution to cease or suspend Pressing ESC repeatedly eventually returns to the MAIN RUN screen and from there allows momentary viewing of the RPMA introduction Screen Pressing the key changes a numerical sign when editing It also toggles through multiple screens when available and from some run screens is a shortcut to a momentary display of active RANGE Pressing the A SU and L gt 1 keys allows up down reverse and forward cursor movement when editing data entry or moving in menus Some screens go beyond the two lines provided by the display This is indicated by a flashing arrow in the second line of the display Press the cursor control keys to move the cursor to access the lines that are not visible or directly enter the number of the hidden menu choice if you know it Page 17 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL 3 2 3 L3 REMOTE ENT ENTER FOOTSWMTCH The optional remote ENTER function is a switch that duplicates the function of the front panel ENT key The remote ENTER function is serviced by a connector on the RPMA rear panel An optional footswitch is available to activate remote entry hands free or a different switch may be
198. s 5 5 5 2 LO Q RPT MODULE RPM4 may be equipped with a Lo Q RPT module The Lo Q RPT provides a lower measurement range than the Hi Q RPT See Section 1 2 2 1 for complete Q RPT specifications 5 5 6 DISPLAY 2 x 20 character vacuum fluorescent display 2004 2007 DH Instruments a Fluke Company Page 128 5 MAINTENANCE ADJUSTMENTS AND CALIBRATIONS 5 6 Q RPT MODULE PNEUMATIC SCHEMATICS Axxx Q RPT gt A10M No SDS ATM TEST Axxx Q RPT A10M TEST VENT TEST Gxxx or BGxxx Q RPT TEST CONDITION SDS Open VENT SDS Closed TEST Figure 8 Pneumatic hydraulic schematics of RPM4 with Single Q RPT Module Page 129 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL The pneumatic schematic for RPM4 s with two Q RPT modules is the same as for the single Q RPT modules in Figure 8 with the following exceptions e If both modules use the barometer the barometer is connected to teed to both module barometer connection points e Anexception is the combination of an Axxx with SDS lt 10 and G15K or BGxxx shown below TEST VENT Axxx Q RPT A10M with G15K or BGxxx BAROMETER TEST TEST VENT TEST Figure 9 Pneumatic hydraulic schematics of RPM4 with Two Q RPT Modules 2004 2007 DH Instruments a Fluke Company Page 130 6 TROUBLESHOOTING D H Instruments Fluke Company 6 TROUBLESHOOTING RPMA is a sophist
199. s activated always press AutoZ to run AutoZ and obtain an actual value of Pic Page 59 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL AutoZ in gauge measurement mode with a or BGxxx Q RPT Q RPTs with the designation Gxxx or BGxxx are intrinsically gauge They have an atmospheric TEST reference port and measure gauge pressure difference from atmosphere In gauge measurement mode the value of Pa is always zero gauge pressure Zero gauge pressure by definition is applied to the Q RPT when it is vented to atmosphere When using a Gxxx Q RPT in gauge measurement mode with AutoZ ON gauge pressure is calculated as P gauge Pu In gauge measurement modes AutoZ is run when initiated by the operator pressing AutoZ when the is vented This assures the regular automated updating of the Pottset value AutoZ in differential measurement mode RPM4s with two Q RPTs of the same type Axxx Gxxx BGxxx support differential measurement mode see Section 3 3 3 1 in which the measured pressure is the difference between the pressure measured by the Hi Q RPT and the Lo Q RPT Hi Lo In differential measurement mode the purpose of AutoZ is to compensate for the offset between the Hi and Lo Q RPT indications at the line pressure at which the differential pressure is being measured The value of Pstao is the pressure indicated by the Lo Q RPT at the time of Auto
200. s of pressure rate of change the RPM4 automated read rate function can be turned OFF In this case the reading rate is always the high resolution rate of about 1 2 readings per second OPERATION To turn the automated read rate function ON or OFF or check its current status press SPECIAL lt 7internal gt lt 3ReadRt gt Auto read rate The display is lon 2off The cursor is on the current selection 2004 2007 DH Instruments a Fluke Company Page 74 3 OPERATION Selecting lt 1 gt activates the automated reading rate and returns to the MAIN RUN screen Selecting lt 2off gt turns OFF the automated reading rate and returns to the MAIN RUN screen The default RPM4 condition is auto read rate ON Auto read rate ON OFF is NOT Q RPT or range specific Turning auto read rate ON or OFF in one range turns it ON or OFF for all RPM4 ranges 3 5 7 3 lt RPT2 gt O PURPOSE To enable and disable the RPM4 parallel measurement mode in which two Q RPT modules are used to measure in parallel and their readings are averaged O PRINCIPLE RPM4s that have two Q RPT modules of the same type or BGxxx support parallel measurement mode In this mode both Q RPTs are used to measure the same pressure in parallel and their readings are averaged Parallel measurement mode sets up a third Q RPT designated HL combination of Hi and Lo The HL RPT can be selected by the RANGE function and supports
201. s the AutoZ function see Section 3 5 1 If calibrating in absolute measurement mode turn AutoZ ON if it is left ON in normal RPM4 operation If calibrating in gauge measurement mode always turn AutoZ ON 6 Use SPECIAL lt 8cal gt lt 1Hi RPT or 2Lo RPT gt lt 1view gt to read and record the current values of PA and PM for the Q RPT to be calibrated If calibrating in absolute mode also record the value of Potiset 2004 2007 DH Instruments a Fluke Company Page 124 5 MAINTENANCE ADJUSTMENTS AND CALIBRATIONS Run the recommended calibration point sequence for the Q RPT see Section 5 2 4 Record the pressure applied by the standard and the RPM4 reading at each calibration point Dwell at least 60 seconds at each point after setting the reference pressure to allow full stabilization The data recorded is the as received data for this calibration Enter the calibration pressures and RPM4 readings into a spreadsheet Calculate the non corrected RPM4 readings by backing out the PA PM and in the case of absolute Q RPTs in absolute mode only do not back out Por for for gauge mode calibrations recorded in Steps and above following non corrected reading corrected reading PA PM Perform a linear regression to find the offset and slope that best fit the non corrected RPMA readings to the calibration standard pressures The offset is the new value of PA the sl
202. s to the main run screen with the Hi Lo DISPLAY active With the Hi Lo DISPLAY active the main run screen is 99 1135 psi 2 H 99 2254 L98 0098 2 Lowest pressure observed since Hi Lo reset t t 1 Highest pressure observed since Hi Lo reset The Hi Lo values change each time a new Hi or Lo pressure is observed The Hi Lo record can be reset at any time by pressing ENT This allows a Hi Lo reset without going back through the DISPLAY menu If the pressure measurement unit mode or range is changed while the Hi Lo DISPLAY is active Hi Lo resets To go to a DISPLAY other than Hi Lo press DISPLAY and make a new DISPLAY choice see Section 3 3 6 2004 2007 DH Instruments a Fluke Company Page 40 3 OPERATION 33 66 Freeze O PURPOSE To activate the Freeze DISPLAY See Section 5 5 6 O Principle OPERATION To activate the Freeze DISPLAY press DISPLAY lt 6Freeze gt Pressing lt 6Freeze gt returns to the main run screen with the Freeze DISPLAY active With the Freeze DISPLAY active the main run screen is 1 Pressure measured by active range of RPM4 99 135 psi a 2 when ENT was pressed displays 0 00 by F 99 2133 default when Freeze DISPLAY is first activated 1 Pressing ENT causes the current pressure measured by the active RPM4 Q RPT to be captured and displayed gt If the pressure measurement unit mode or range is changed while the Freeze DISPLAY is active
203. sent ABORT enhanced Reply ABORT no reply if IEEE 488 Example Sent ABORT classic Reply ABORT See Also PRR RATE SR or CONT 3 2 1 2004 2007 DH Instruments a Fluke Company Page 88 4 REMOTE OPERATION ARANGEn Purpose Read or set a new AutoRange range to use Command ARANGEn Range unit mode RptLabel set to user defined range ARANGE Q RPTLaber set to Q RPT default range Query ARANGEn Classic ARANGEn Range units mode RptLabel set to user defined range ARANGE Q RPTLabel set to Q RPT default range Query Optional Suffix n A suffix may be used instead of FiptLabel 47 Specify the Hi Q RPT if the Hi and Lo Q RPTs are NOT OFF Specify the HL Q RPT if the Hi and Lo Q RPTs are OFF 2 Specify the Lo Q RPT 3 Specify the HL Q RPT Arguments Range The AutoRange maximum pressure Cannot be negative Unit The unit of measure of the Hange argument Mode The measurement mode of the Range argument A for absolute G for gauge N for negative gauge Measured pressure values are returned with g to identify measurement mode for both gauge and negative gauge measurement modes RptLabel One of the Q RPTs that is available optional IH Hi Q RPT if the Hi and Lo Q RPTs are NOT OFF HL Q RPT if the Hi and Lo Q RPTs are OFF IL Lo Q
204. ssure unit abbreviation measure measure in which pressure values are displayed Measurement Identifies lt a gt absolute mode measurement mode lt g gt gauge or negative gauge of displayed pressure lt d gt differential Head Indicates whether a lt h gt the fluid head is not zero pressure fluid head correction lt blank gt fluid head is zero indicator is applied to PRESSURE1 5 2 AutoZero Indicates whether lt 2 gt AutoZ is indicator the AutoZero function blank AutoZ is OFF is ON or OFF for the active Q RPT and measurement mode Active Indicates the position Hi Hi Q RPT Q RPT of the active Q RPT Lo Lo Q RPT position in the RPM4 lt HL gt Hi and Lo Q RPTs together in indicator parallel measurement mode lt Hi and Lo Q RPTs together in differential measurement mode 7 nn nn Sequence Indicates progress of NN NN Number of this point progress ATest sequence over total number of points indicator during test execution in the sequence 8 DISPLAY Information Pressure indication Numerical pressure value FUNCTION specific to depending on current and sign the DISPLAY RPM4 DISPLAY lt PPC3 EXT DEV gt when the RPM4 mode function Leading is initialized as an external device character identifies to a PPC3 pressure controller the value Pressure Pressure information Display mode is AVERAGE information indicator depending and value is standard deviation indicator on current RPM4 Display
205. st fails Execution is suspended until ENT is pressed The RPM4 65232 test fail for three reasons 1 The RS232 cable being used is incorrect Section 4 2 1 1 4 2 1 3 for information on the correct cable 2 and 2 do NOT have the same serial communications settings and therefore cannot communicate together see Section 3 5 2 1 to set the COM porte 3 COMI or COM2 is defective The reason for failed communications is almost always a cable or incorrect R9222 interface settings Be sure that these are correct before concluding that a COM port ie defective 3 5 3 lt gt PURPOSE To view or change the properties of the HEAD function see Section 3 3 7 including the unit of measure of length for head height entry and the test fluid type and species for density calculations O OPERATION From the MAIN RUN screen pressure SPECIAL lt 3Head gt Select the desired height unit of measure and press ENT Select 1gas or 2liqud depending on the pressurized medium between the RPM4 and the height at which pressure is to be calculated Select the gas or liquid species The liquid selection lt 3User gt is to create a custom liquid with a user entered density Use HEAD to set a head height if desired 2004 2007 DH Instruments a Fluke Company Page 64 3 OPERATION 3 5 4 lt ASDS gt PURPOSE To open and close SDS temporarily for the Hi or Lo Q RPT or to turn the SDS functi
206. t mode If the unit is meters this value is be interpreted in kPa If the unit is feet this value is be interpreted in psi Remarks The RPM4 has an upper limit for each range and for each measurement mode gauge absolute and differential If the pressure does exceed the upper limit the pressure display flashes This feature should always be used to prevent accidental over pressure of a device under test Example sent UL 1000 enhanced Query reply 1000 00 kPa a reply if GPIB 488 Example sent UL 1000 enhanced Query reply 1000 00 kPa a Example Sent UL 1000 classic Reply 1000 00 kPa a Errors ERR 6 The limit argument is out of range See Also LL 3 4 4 2004 2007 DH Instruments a Fluke Company Page 106 4 REMOTE OPERATION UNITA Purpose Read or set the pressure unit of measure unit and measurement mode Command UNITA unit ref UNITA unitn re UNITn unitg re Query UNITA unita ref UNITn unitd ref UNIT n Classic UNITn unit ref UNITn unitn ref UNIT n unitg ref UNITn unita ref UNIT n unitd UNIT n Optional Suffix n The active Q RPT is assumed if no suffix is given 47 Specify the Hi Q RPT if the Hi and Lo Q RPTs are NOT OFF and the HL Q RPT is not active Specify the HL Q RPT if the Hi and Lo Q RPTs are OFF 2 Specify the Lo Q RPT if the HL
207. t that is connected to atmosphere BGxxx Q RPTs support measurement in gauge and negative gauge modes RPM4s with two BGxxx Q RPTs differential measurement mode is supported on the Hi Q RPT When changing modes for a range if the full scale of the range is 700 kPa 100 psi or greater the full scale is the same in both absolute and gauge modes If the full scale is less than 700 kPa 100 psi the gauge mode full scale is 100 kPa 14 5 psi lower than the absolute mode full scale If the absolute mode full scale is less than 100 kPa 14 5 psi there is no gauge mode available Gauge and negative gauge modes when available always have the same full scale Measurement mode selection is range specific O OPERATION See Section 3 3 3 1 for information on differential mode operation Differential mode operation is only available for the Hi Q RPT in RPM4s that are equipped with two Q RPTs of the same type Gxxx To change the active measurement mode for a range press MODE from the MAIN RUN screen while the Measurement mode range is active The display depends upon the type of labs 2gage 3neg gage Q RPT that is active 2004 2007 DH Instruments a Fluke Company Page 28 3 OPERATION If an Axxx Q RPT is active all thee measurement modes are supported absolute gauge and negative gauge Only gauge is available if absolute and negative gauge modes have been turned OFF in calibration see Section 5 2 5
208. te g c Measurement mode in which the measured pressure is the different between the Hi Lo Q RPT Hi Lo Abbreviation of full scale The full scale value is the maximum pressure of a measurement range Limits and specifications are often expressed as FS Also see span Differential mode A type of Q RPT that is intrinsically gauge but only measures pressure greater than atmosphere Gxxx Q RPTs support gauge measurement mode only Measurement mode in which the Q RPT indicates gauge pressure difference from Gauge Mode atmospheric pressure but only in the positive direction above atmosphere A difference in height between the RPM4 reference level and the DUT HiLo A DISPLAY function in which the highest and lowest pressure measurements since reset are recorded and displayed Hi Q RPT The designation of a single Q RPT in an RPMA or if there are two the one that has the highest full scale default range HL Q RPT The designation of the pseudo Q RPT that results from the combination of using two Q RPTs simultaneously in parallel measurement mode In an RPM4 with two Q RPTs the Q RPT that is not currently displayed on the top line Inactive Q RPT of the display The inactive Q RPT may be displayed on the second line of the RPM4 display using the RPT DISPLAY function Lo Q RPT The designation of a the Q RPT with the lower full scale default range in RPM4s with two Q RPTs Whether pressure is being measured
209. te the new value of Old Portset 0 0 Pa Pottset Or ESC to start over New Poster 3 1 The value of Potrset is always displayed and entered in Pascal Pa 2004 2007 DH Instruments a Fluke Company Page 50 3 OPERATION 33 93 AUTOZ IN DIFFERENTIAL MODE PURPOSE To compensate for the offset between the Hi Q RPT and the Lo Q RPT at the operating line pressure in differential measurement mode See Section 3 5 1 Principle for a full explanation of the AutoZ function O OPERATION For the AutoZ function key to run AutoZ AutoZ must be turned ON for the active range and measurement mode AutoZ ON is indicated by lt z gt to the left of the Q RPT designator on the first line of the main run screen AutoZ ON and OFF is set using SPECIAL lt 1AutoZ gt see Section 3 5 1 If AutoZ is OFF for the active Q RPT and measurement mode lt AutoZ ie off gt is displayed when AutoZ ie pressed To run AutoZ in differential measurement mode set differential as the measurement mode see Section 3 3 3 and press AutoZ from the main run screen Running differential AutoZ gt is displayed briefly before returning to the main run screen Before running AutoZ in differential mode set the line pressure at which the differential measurements will be made and assure that a common pressure is applied to both Q RPTs If running AutoZ in differential mode results in a zero offset that RPM4 considere unusually larg
210. tects an excessive difference between the pressure measured by the Hi and Lo Q RPTs a warning is given by rapid beeps for 8 seconds and displaying Check RPT connections Page 75 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL Operation returns to normal when the disagreement between the two Q RPTs returns to normal When using parallel measurement mode the Hi and Lo Q RPTs should be connected IN PARALLEL to the pressure to be measured both Q RPTs connected to the same pressure The measured pressure indicated in parallel measurement mode is the average of the Hi and Lo Q RPTs 35 7 4 lt LO NT gt O PURPOSE To cause an RPM4 s or BGxxx Q RPT TEST vent valve to stay open or closed rather than open and close automatically This feature ie active only when the active Q RPT ie gauge or bi directional gauge Q RFT O PRINCIPLE An RPM4 equipped with a Gxxx gauge or BGxxx bi directional gauge Q RPT has a TEST vent valve in its Q RPT module see Figure 8 Gxxx BGxxx Valve C The TEST vent valve is used to open the TEST port to atmosphere which also connects the Q RPT and the device or system under test low side to atmosphere In normal RPM4 operation the TEST valve is closed to isolate the low pressure circuit from fluctuations in ambient pressure when the Q RPT is being used to measure pressure It is open only when SDS is closed
211. ted Q RPT measurement stability limit k 2 over one year assuming regular use of AutoZero function AutoZero occurs automatically in gauge mode whenever vented by comparison with barometric reference in absolute mode Absolute mode predicted one year stability without AutoZ is 0 005 Q RPT span 0 005 of reading 2 Combined linearity hysteresis repeatability Add 1 Pa 0 00015 psi in gauge mode with an Axxx absolute Q RPT for the resolution and short term stability of the on board barometer 3 Maximum deviation of the Q RPT indication from the true value of applied pressure including precision predicted one year stability limit temperature effect and calibration uncertainty combined and expanded k 2 following the ISO Guide to the Expression of Uncertainty in Measurement 4 of reading value times measured pressure from 100 to 30 of Q RPT span Under 30 of Q RPT span of reading value times 30 of Q RPT span For example if the Q RPT is a Standard A160K the Measurement Uncertainty in pressure is 0 010 times the measured pressure to 48 kPa 160 kPa span x 30 and 0 0048 kPa 160 kPa span x 30 x 0 01 under 48 kPa 5 of reading value times measured pressure from 100 to 30 of AutoRanged span Under 30 of AutoRanged span of reading value times 30 of AutoRanged span If AutoRanged span is less then 30 of maximum Q RPT span of reading values times measured pressure or of reading times 9 of Q RPT span w
212. ted is displayed press ENT If you are sure you want to delete this range press ENT again in response to the lt Delete gt query ESC returns to the lt AutoRange gt screen without deleting a range To delete all of the saved AutoRange ranges press SETUP lt 1 gt lt 3delete all gt If you are sure you want to delete all the ranges respond lt 1 gt to the Delete all saved ranges query If not respond lt 2 gt 3 4 2 RES RESOLUTION O PURPOSE To set the resolution with which measured pressures and other pressure indications and settings are displayed O PRINCIPLE The resolution with which RPM4 displays pressure values can be adjusted This feature can be used to reduce the resolution when lower precision measurements are being made and excess resolution might confuse or distract the operator The resolution setting determines the number of digits with which pressure is displayed The resolution is calculated based on the span of the range and then rounded to the furthest Page 53 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL digit to the right For example resolution of 0 001 96 on a range of 150 kPa is 150 X 0 001 96 2 0 0015 which is rounded down to 0 001 kPa Default resolution is 10 ppm of active range span Resolution is set automatically by AutoRange see Section 3 3 4 O OPERATION To access the resolution function press SETUP D
213. ter The TEST is connected to the low side of Gxxx gauge or Gxxx bi directional gauge Q RPTs e When operating in absolute mode The TEST port if present is left open to atmosphere e When operating in gauge or negative gauge mode with a range greater than 50 kPa 7 5 psi The TEST port if present is normally left open to atmosphere A possible exception is when the device or system under test is in an ambient pressure that may differ significantly from the ambient pressure around the RPM4 For example if the RPM4 is measuring the pressure applied to DUTs in an environmental chamber the pressure in the environmental chamber may be different from ambient pressure around the RPM4 In this 2004 2007 DH Instruments a Fluke Company Page 10 2 INSTALLATION case connecting a tube from the TEST port to the inside of the chamber may improve measurement results If the Q RPT in use is an Axxx Q RPT this tube must be left open to the environment so that the pressure inside cannot deviate too far from ambient When using an Axxx Q RPT if this tube is connected to the low or reference side of DUTs be sure to open it to the local environment as well e When operating in gauge or negative gauge mode with a range less than 50 kPa 7 5 psi As a general rule it is preferable to connect the RPM4 TEST port s directly to the low or reference side of the device under test to assure that these are at the same pressure When usin
214. the cursor is on the first character Numerical values can be entered directly from the keypad In addition the cursor control keys can be used to toggle through a list of available alphanumeric characters Holding the key slews through the characters Character order going up is blank space symbols lower case letters upper case letters numbers After selecting a character press ENT to activate it and move to the next character field When a character is selected the cursor moves to the next character To leave a blank character press ENT with the field for that character blank Use this for the trailing characters if the ID being entered is less than twelve characters After the last of the twelve characters has been entered the Save ID gt option is offered Select lt 1no gt to return to the ID edit screen Select lt 2yes gt to save the edited ID ID can be set remotely from computer which is quite bit more convenient than entering charactere from the keyboard see Section 4 4 4 ID command The ID ie not cleared or reset by any RESET function see Section 3 5 9 3555 lt LEVEL gt SECURITY O PURPOSE To set user protection levels to restrict access to certain functions and to edit the password required for changing user levels O PRINCIPLE RPM4 s front panel user interface provides the means to access all RPM4 user defined data settings and functions including calibration data Inadvertent unin
215. ther program message to the RPM4 This insures that the RPM4 has completed the program message Most remote program messages will return a reply within 500 ms except PR PRR SR ATM RATE Up to 2 seconds RPT ARANGE AUTOZERO RUN Up to seconds The syntax and format used for each program message in the classic mode is listed next to the keyword Classic in each program message summary in Section 4 4 4 4 3 2 ENHANCED PROGRAM MESSAGE FORMAT The enhanced program message format uses the IEEE Std 488 2 format syntax and status reporting Errors are reported using the IEEE Std 488 2 status reporting model If an error is reported the error is put into an Error Queue and the ERR query program message can be used to get a text description of the most recent error If you are using the IEEE 488 port the service request line can be setup to be asserted if this occurs see Section 4 5 2 In the enhanced format there are two possible program message types for every program message Each of these two types starts with the same basic text referred to as the program message header The two types are COMMAND type and QUERY type commands 4321 USING COMVANDTYPE COMMANDS Enhanced format commands DO reply when using the IEEE 488 interface unless 2 is included in the command Do not expect response from the RPM4 s IEEE 488 interface to non query no commands as there
216. tion to improve measurement specifications measurement uncertainty when span is reduced Page 31 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL OPERATION To use the AutoRange function press AutoRange and respond to the RPM4 s prompts Select AutoRange measurement mode The screen is identical in appearance and function to the MODE screen see Section 3 3 3 The choice of measurement modes offered reflects all the Q RPT types available Axxx Gxxx BGxxx in the RPM4 system not just the active Q RPT Differential pressure measurement mode see Section 3 3 3 1 is not available in AutoRange Select pressure unit of measure The screen is identical in appearance and function to the UNIT screen see Section 3 3 2 Altitude units of measure ft are not available for AutoRange Enter the AutoRange full scale pressure Enter the full scale pressure value in the lt gt entry field and press ENT If the scale value entered cannot be covered by any of the Q RPTs available an error message appears If the full scale value can be covered AutoRange proceeds to the range display O View proposed AutoRange range The proposed AutoRange range screen is 1 Indication that this is a screen of the proposed AutoRange range 1 2 2 Designator and position of the Q RPT that AutoRange has selected to cover the AutoRange scale and measurement m
217. tive Q RPT is assumed if no suffix is given 47 Specify the Hi Q RPT if the Hi and Lo Q RPTs are NOT OFF and the HL Q RPT is not active Specify the HL Q RPT if the Hi and Lo Q RPTs are OFF 2 Specify the Lo Q RPT if the HL Q RPT is not active and measurement mode is not differential 8 Specify the HL Q RPT if the HL Q RPT is active Arguments Mode A Absolute mode G Gauge mode N Negative gauge mode D Differential mode available only for the Hi Q RPT Measured pressure values are returned with g to identify measurement mode for both gauge and negative gauge measurement modes Differential mode restricts access to settings on the Lo Q RPT Remarks The measurement mode can also be set using the UNIT command but the UNIT command does not distinguish between gauge and negative gauge in it s reply while the MMODE does Measurement mode is range specific Example sent MMODE A enhanced Query reply A No reply if IEEE 488 Example sent MMODE A enhanced Query reply sent MMODE G enhanced Query reply Errors ERR 6 Invalid argument text ERR 7 Abs mode only with altitude units or gauge mode only with gauge Q RPT ERR 10 The suffix indicating the Q RPT is invalid for the current conditions ERR 20 Absolute or negative gauge mode not available with gauge Q RPT Absolute Q RPT with an absolute and negative g
218. toZ in or parallel mode see Section 3 5 7 3 autozeros both the Hi and Lo Q RPTs simultaneously To run AutoZ in gauge measurement mode set gauge or negative gauge as the measurement mode see Section 3 3 3 and press AutoZ from the main run screen AutoZ gt If the Q RPT is a Gxxx or BGxxx type the display is lt Preparing to for five seconds to allow time for the bypass valve between the TEST and TEST sides of the Q RPT to assure zero differential pressure and for the pressure to stabilize see Section 5 6 Figure 8 lt Running gauge AutoZ gt is displayed briefly before returning to the main run screen Before running AutoZ in gauge mode ensure that the pressure applied to the Q RPT is truly zero gauge atmospheric pressure If running AutoZ in gauge mode results in a zero offset that RPM4 considers unusually large lt Confirm O gauge P gt is displayed when AutoZ is pressed Check that zero gauge pressure is applied to the TEST port and there is no differential pressure across the TEST and TEST ports and press ENTER to continue or ESCAPE to abort Allow the RPM4 to stabilize at atmospheric pressure and ambient temperature for 1 to 2 minutes before running AutoZ in gauge mode Page 47 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL 3392 AUTOZ IN ABSOLUTE MODE O PURPOSE To rezero the active Q RPT in absolute measurement mode See Section 3 5 1 O Princip
219. toZ to run RPMA logs both readings and calculates new AutoZ offset value The display is Press ENT to activate the new value of Old Poffse 0 0 Or ESC to start over New Poffse 3 1 For RPM4 to communicate with an RPMx connected to its COM2 port the RPM4 and the RPMx RS 232 interfaces must be set up properly see Section 3 5 2 If the RPM4 is unable to communicate with an RPMx via COM2 when running AutoZ by COM2 it times out after 6 seconds and displays lt RPM NOT detected e The value of Potser is always displayed and entered in Pascal Pa Run AutoZ by Lo RPT AutoZ by Lo RPT is available only if the active Q RPT is the Hi Q RPT and there is an Axxx Lo Q RPT AutoZ by Lo RPT allows the Lo Q RPT in an RPM4 to serve as the AutoZ reference source of Pstao see Section 3 5 1 PRINCIPLE The Lo Q RPT is read and the new is calculated automatically To access run AutoZ by Lo RPT press AutoZ lt 3Lo RPT gt The display is 1 2 1 Real time pressure reading without head correction pressure unit of measure and measurement mode of the active Q RPT 96 7755 kPa a Hi 2 Active Q RPT position designator Pstd 0 97 7786 3 Real time reading from the Lo Q RPT 3 Observe the displayed pressures and verify that they are stable When ready press ENT to cause AutoZ to run RPM4 logs both readings and calculates a new AutoZ offset value The display is Press ENT to activa
220. ttings that are dependent on the range Q RPTs selected with this command are used with their full default pressure range The reply indicates the active range in psi if the RPM4 is a US version or in kPa if the RPM4 is an SI version Used as a simple query the active range is returned which can be an AutoRanged range or a default range see ARANGE Example sent RANGE IL select internal Lo Q RPT in it s full default range enhanced Query reply 2 2 psi g IL Example Sent select internal Hi Q RPT in it s full default range classic Reply 1000 psi a IH Example Sent RANGE request current range classic Reply 220 psi a IL Errors 6 Invalid Rng argument ERR 29 The selected Q RPT is not available See Also ARANGE RPT 3 2 3 3 3 1 3 3 4 RATEn Purpose Read the next available pressure rate of change Query RATEn Classic RATEm Optional Suffix n The active Q RPT is assumed if no suffix is given 47 Specify the Hi Q RPT if the Hi and Lo Q RPTs are NOT OFF Specify the HL Q RPT if the Hi and Lo Q RPTs are OFF 2 Specify the Lo Q RPT 8 Specify the HL Q RPT if the HL Q RPT is active Remarks The next available pressure rate of change in the current pressure unit per second is returned After receiving this program message the RPM4 replies back with the data once a new pressure measurement cycle is complete This can take
221. tunities for AutoZ to execute see Section 3 2 2 In gauge measurement modes on Q RPT the value of Pstao is always zero gauge pressure Zero gauge pressure by definition is applied to the Q RPT when it is vented to atmosphere In gauge measurement modes AutoZ is run when initiated by the operator pressing AutoZ when the RPM4 is vented This assures regular updating of the Poitset a value corresponding to atmospheric pressure Gauge pressure is the measured absolute pressure Pu minus Poftset c Pyauge Py When AutoZ is dynamic compensation for atmospheric pressure is also applied to compensate for changes in atmospheric pressure as measured by a barometer between AutoZ updates see Section 3 2 2 The measured gauge pressure is calculated using to correct the value of Porserc Pgauge Py Pottset c In gauge measurement mode RPT running the AutoZ function to update the value of is initiated by the operator using AutoZ Updating of occurs automatically and continuously When gauge or negative gauge mode is first activated on an Axxx Q RPT the value of Subtracted from the absolute pressure reading to achieve gauge pressure is standard atmosphere of 101 525 kPa This can cause a large zero error when gauge mode is activated if atmospheric pressure is significantly different from standard atmospheric pressure When gauge mode i
222. ty This may be O for odd E for even or N for none Data The number of data bits This may be 7 or 8 stop The number of stop bits This may be 1 or 2 Defaults COM2 2400 E 7 1 Remarks 2 is generally used to allow the host computer to communicate through the RPM4 to an additional device connected to COM2 This can be useful if the host computer does not have 2 serial ports available Example sent COM2 9600 N 8 1 enhanced Query reply 9600 N 8 1 No reply if GPIB 488 Example sent COM2 9600 8 1 enhanced Query reply 9600 N 8 1 Example Sent COM2 9600 N 8 1 classic Reply 9600 N 8 1 Errors ERR 7 Missing or improper program message argument s See Also COM1 3 5 2 1 Page 91 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL CONTn Purpose Have the RPM4 reply continuously as each new measurement becomes available Query CONTn Classic CONTn Optional Suffix n The active Q RPT is assumed if no suffix is given 47 Specify the Hi Q RPT if the Hi and Lo Q RPTs are NOT OFF Specify the HL Q RPT if the Hi and Lo Q RPTs are OFF 2 Specify the Lo Q RPT Specify the HL Q RPT if the HL Q RPT is active Remarks This command is somewhat different than most as it enables th
223. ty level to low Parallel Measurement Mode Off SDS 2004 2007 DH Instruments a Fluke Company All SDS full time ON Page 80 4 REMOTE OPERATION H DH Instruments A Fluke Company 4 REMOTE OPERATION 41 OVERVIEW Most of the RPM4 front panel functions can also be executed by commands from a remote computer The host computer can communicate to the RPM4 using the RPM4 s COM1 RS232 port or it s IEEE 488 port Before writing test code using RPM4 remote commands familiarize yourself with its operating principles by reading Section 3 of this manual 4 2 INTERFACING Sending a program message to the RPM4 places it into remote mode The remote indicator to the right of the display window lights when the RPM4 is in remote mode It also flickers when a program message is received The menus usually accessed from the front panel are locked out while in remote The ESC key returns the RPMA to local operation unless the lt REMOTE gt program message which locks out all keypad operation was sent to the unit 42 1 RS232INTERFACE 4211 COM The RPM4 1 RS232 interface is located on the back of the unit It is a 9 pin male DB 9F connector configured as a DCE device Data is transmitted out of the unit using pin 2 and is received on pin 3 This allows a normal pin to pin DB 9M to DB 9F RS232 cable to be used to connect to a DTE host Handshaking is not required or supported COM receive buffer is
224. type exists the Query sent label is shown instead Directly under this label Query reply shows a typical reply to a query type Reply shows that a query format does not exist It may have a short description next to it Classic An example of the use of a classic program message to be sent to the RPM4 is shown The command sent to the RPM4 appears after the Cmd sent label The Reply label shows a typical reply to the Sent example It may have a short description next to it Errors If the program message can report an argument error the types of errors are listed If using the classic format or the COM port the error message is replied after receiving the program message If using the enhanced format via the IEEE 488 port the error condition is handled by the status reporting model which stores the errors in an Error Queue and can be programmed to assert the IEEE 488 SRQ line to signal an error has occurred In either case the ERR or ERR program message can be used to retrieve a text description of the error See Also Indicates related commands 4 and refers to manual sections giving detail on RPM4 operation corresponding to the program message Page 87 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL 4 4 4 PROGRAM MESSAGE DESCRIPTIONS Purpose To allow the host PC to communicate with
225. u want UNIT function needs to be customized Use PresU function to customize the UNIT function or reset units to default 3 5 6 Front panel display is dim Screen saver option has activated Page 131 Operation is normal Press any key to resume full screen power Adjust screen saver time if desired 3 5 5 1 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL SYMPTOM AutoRange is not selecting the desired Q RPT for the specified range PROBABLE CAUSE The Q RPT range does not cover the desired AutoRange SOLUTION Check that Q RPT default range is high enough to cover the AutoRange Table 1 The specified operating mode is absolute or negative gauge and absolute and negative modes are OFF for the desired Q RPT Check that absolute negative gauge is ON for the Q RPT 5 2 5 The Q RPT is Gxxx gauge only and the specified operating mode is absolute or negative gauge Check that the Q RPT type supports the desired measurement mode 3 3 3 Range will NOT change Displays Pressure on Hi or Lo RPT exceeds RR upper limit The pressure currently applied to the range that is being selected exceeds the UL upper limit set for that range Reduce pressure applied to test port to less than UL of target range 3 4 4 Pressure display is flashing and beeper is sounding intermittently Current upper limit of active range has been exceeded Re
226. ue 3 4 4 Resolution 0 001 96 FS of Hi Q RPT default range 3 4 2 AutoZ AutoZ ON for all Q RPTs and measurement modes 3 5 1 2 Value not affected AutoZ Set to 101 325 kPa a 3 5 1 3 2 2 Leak Check 15 second run time Clear logged results 3 3 5 Screen Saver 10 minutes to activation 3 5 5 1 Key Sounds Medium tone valid key press sound 3 5 5 2 Lo Vnt Automatic 3 5 7 4 ReadRate Automatic 3 5 7 2 3592 lt 2UNTS gt O PURPOSE Sets the six pressure units available under the UNIT function to the SI or US default selections depending on whether the RPM4 has been factory set for SI or US see Section 3 3 2 Sets the user defined unit to 1 000 Pa see Section 3 5 6 Sets the reference temperature for inWa unit to 20 C 3593 lt 3ATEST gt O PURPOSE Resets Auto Tests to default characteristics see Section 3 3 10 e Clears AutoTest data log see Section 3 4 5 3594 ACAL O PURPOSE A The Reset Cal function will reset Q RPT utility sensor and barometer calibration coefficients and settings and reset AutoZ values to zero This will change the RPM4 calibration and could cause it to make out of tolerance measurements Clears all user values affecting the calibration of Q RPTs and the on board barometer The Reset Cal resets are itemized in Table 12 Page 79 2004 2007 DH Instruments a Fluke Company All Q RPT Calibration Coefficients RPM4 OPERATION AND M
227. uke Company Page 126 5 MAINTENANCE ADJUSTMENTS AND CALIBRATIONS 55 SUBASSEMBLY DESCRIPTION AND LOCATION 1 Micro Card 3 Driver Board 6 Hi Q RPT module 2 Power Supply Module 4 On Board Barometer if present A7M style shown beneath Driver Board 5 Lo Q RPT module if present 7 Display A7M style shown Figure 7 Internal View 5 5 1 MCRO BOARD The micro board supports a Motorola 68302 micro controller EPROM EEPROM 128k x 16 bit NVRAM 8 Mbit flash memory RS 232 and IEEE 488 2 communications keypad and display control An I O port controls other ports and devices RPM4 5 5 2 POWER SUPPLY MODULE 12 V DC x 2 96 2 1 Amps Page 127 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL 5 5 3 DRIVER BOARD The driver board is controlled by the mini micro board see Section 5 5 1 It supports e 12 V drivers for internal solenoid valve actuation e Frequency counters 2 for reading Q RPTs see Section 5 5 5 e On board barometer power and output see Section 5 5 4 e Utility sensor if present power and output e Power to the system cooling fan e Remote ENT e Keypad and display e 5 5 4 ON BOARD BAROMETER The on board barometer supports a board mounted barometric range micromachined silicon sensor and an ambient temperature sensor The barometer readings are used for dynamic atmospheric pressure compensation when measuring gauge pressu
228. up to the current read rate period 1 2 seconds by default Example Query sent RATE enhanced Query reply 0 01 kPa s Example Sent RATE2 classic Reply 0 03 kPa s See Also QPRR READRATE 3 3 6 2 Page 99 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL READRATEn Purpose Read or set the specified or active Q RPT read rate or auto read rate mode Command READRATEn period Query READRATEn Classic READRATEn period Optional Suffix n The active Q RPT is assumed if no suffix is given 1 Specify the Hi Q RPT if the Hi and Lo Q RPTs are NOT OFF and the HL Q RPT is not active Specify the HL Q RPT if the Hi and Lo Q RPTs are OFF 2 Specify the Lo Q RPT if the HL Q RPT is not active and measurement mode is not differential 3 Specify the HL Q RPT if the HL Q RPT is active Arguments period Period to integrate the measurement over ms Can be from 200 ms to 20000 ms Set to 0 to enable automatic read rate Remarks The RPM4 can have the speed in which it integrates each measurement read rate automatically adjusted based on the rate or it can manually set to a fixed period Increasing the read rate increases the reply time for pressure and rate queries In differential mode and when using the HL Q RPT the Lo Q RPT read rate is always set to the same read rat
229. ure measurement mode or range while the averaging screen is active starts a new averaging period To go to a DISPLAY other than Average press DISPLAY and make a new DISPLAY choice see Section 3 3 6 Rate PURPOSE To activate the Rate DISPLAY E E See Section 3 3 6 DISPLAY O Principle The AutoTest function see Section 3 3 10 to AutoRange RPM4 based on DUT characteristice and run an automated test sequence ie accessed by pressing ENT from the Rate run screen O OPERATION To activate the Rate DISPLAY press DISPLAY 2Rate Pressing lt 2Rate gt returns to the main run screen with the Rate DISPLAY active With the Rate DISPLAY active the main run screen is 99 1135 psi a Hi 1 Current rate of change of pressure in current R 0 0001 sec pressure units per second E 1 Rate DISPLAY is different separate from the stability setting which is used to set the stability criterion on which the Ready Not Ready indication is based see Sections 3 4 3 and 3 2 1 The Rate DISPLAY only causes the current rate of change to be displayed and has NO affect on the stability setting or the Ready Not Ready condition Page 37 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL The Rate DISPLAY is the default display except in differential measurement mode in which the default DISPLAY is RPT to DISPLAY other than Rate press DISPLAY and
230. ure being measured It is often used as an indication of positive or negative leak rate and as a go no go criterion of when to take data when comparing RPM4 and a device under test for example in a calibration Rate is used by the Ready Not Ready function to determine when a Ready condition exists see Section 3 2 1 DEVIATION Continuously calculates and displays the difference between the pressure measured by RPMA and a target pressure entered by the user see Section 3 3 6 3 This function is useful in monitoring the evolution of pressure around and or away from a desired set point 2004 2007 DH Instruments a Fluke Company Page 34 RPT HI LO FREEZE CLEAN 3 OPERATION If the RPM4 has two Q PRTs allows pressure measurement from the two RPTs to be displayed simultaneously see Section 3 3 6 4 This function is particularly useful in dual Q RPT RPM4s with independent TEST ports to monitor two separate pressures simultaneously It is also used to when the Hi Q RPT is in differential measurement mode to observe the line pressure measured by the Lo Q RPT Records and displays maximum and minimum pressures measured see Section 3 3 6 5 This function is used to keep track of the minimum and maximum pressure observed in a system over a period of time or to monitor if a pressure min max limit has been exceeded Captures and displays the pressure measured by the active range of RPM4 when the ENT key is pressed see Section 3 3
231. ure that even in the worst case the uncertainty on the head correction will be insignificant relative to the tolerance on the measurement 2004 2007 DH Instruments a Fluke Company Page 42 3 OPERATION OPERATION To access the HEAD function press HEAD The display is Edit head height 25 cm N2 2 Edit field for head height f f 1 Test fluid currently specified for the head correction 2 Edit the head height to the desired value Press ENT to return to the MAIN RUN screen with the new head correction active Press ESC to return with no changes f The reference height of the RPM4 pressure measurement is the middle of the RPM4 TEST port The head height should be entered as a positive value if the device or system under test is higher than the RPM4 and negative if it is lower Reference Sscdasese Level TEST Port The HEAD function is NOT range specific The HEAD ON or OFF status remains the same as Q RPTs and ranges are changed Edits made to the head settings are independent of active range or Q RPT s When a head correction ie being applied it is indicated by h in the top line of the MAIN RUN screen see Section 3 1 1 When the head correction is zero the h is not shown change units of head height between inches centimeters and to change the test fluid species use SPECIAL lt 3head gt see Section 3 5 3 3 3 8 SDS SELF DEFENSE SYSTEM
232. urrent pressure units of the active Q RPT always absolute This measurement is followed by the units text Not all RPM4s are equipped with an on board barometer Example Query sent Query reply 97 12348 kPa Example Sent ATM classic Reply 97 12384 kPa a Errors ERR 23 RPM4 is not equipped with a barometer See Also 3 5 7 1 AUTOZEROn Purpose Read or set the status of the AutoZ function Command AUTOZEROn state Query AUTOZEROn Classic AUTOZEROn state Default AUTOZERO1 Optional Suffix n The active Q RPT is assumed if no suffix is given 47 Specify the Hi Q RPT if the Hi and Lo Q RPTs are NOT OFF Specify the HL Q RPT if the Hi and Lo Q RPTs are OFF 2 Specify the Lo Q RPT 3 Specify the HL Q RPT if the HL Q RPT is active Arguments state 0 Autozero OFF 1 Autozero ON Remarks The RPMA AutoZ function can be turned ON and OFF There is a separate AutoZ flag for the gauge absolute and differential measurement modes for each Q RPT This command sets the AutoZ status for the current mode of the specified or the active Q RPT only To set the sate of AutoZ for a measurement mode you must be in that mode Example sent AUTOZERO 0 enhanced Query reply O0 No reply if GPIB 488 Example Sent AUTOZERO 0 classic Query reply AUTOZERO 0 Errors ERR 7 The argument was other t
233. used See Section 7 1 for information on remote ENTER switch wiring The remote ENTER feature can be particularly convenient when running AutoTests see Section 3 3 10 in which using a footswitch to ENT allows hands free operation It can also be used with the FREEZE display function see Section 3 3 6 6 to capture the activation point of a pressure switch 3 L4 SOUNDS RPM4 is equipped with a variable frequency tone device to provide audible feedback and alarms The beeper is used for the following indications Valid key press Brief beep Choice between three frequencies or NO sound is available see Section 3 5 5 2 Invalid key press Descending two tone blurp Leak check completed Three two second beeps see Section 3 3 5 Upper or lower limit exceeded Intermittent one second beeps see Section 3 4 4 Pmax overpressure limit Eight second high frequency beep see Section 3 4 4 1 exceeded Parallel measurement mode Rapid beeps for 8 seconds 3 2 4 possible disconnection of the Hi and Lo Q RPTs AutoTest in out of tolerance Ascending triad descending triad see Section 3 3 10 reading GENERAL OPERATING PRINCIPLES 3 2 1 PRESSURE READY NOT READY There is Heady Not Ready indication LED on the RPM4 front panel This indication is intended to provide the user with a clear and objective indication of when a stable pressure has been achieved Ready is indicated when the current stability rate of change of pressure is
234. utoZ is ON for all RPTs and measurement modes see Section 3 5 1 Certain RPM4 settings be changed when an RPMA is operated with a PPC3 Settings that be changed when an RPM4 is used as a PPC3 external device include SDS AutoRange range Display Range Unit of measure Measurement mode Lo Vent Communications Closed or open status may be changed and SDS full time off will be overwritten to full time on see Sections 3 3 8 3 5 4 May be rewritten see Section 3 3 4 When an RPM4 is initialized by PPC3 as an external device the second line of the RPM4 display is lt PPC3 EXT DEV IDLE gt When the RPM4 is the active Q RPT being used by the PPC3 the second line of the RPM4 display is lt PPC3 EXT DEV ACTIVE Active range may be changed see Section 3 3 1 Active unit may be changed see Section 3 3 2 Active mode may be changed see Section 3 3 3 Setting may be changed see Section 3 5 7 4 For a PPC3 to be able to identify and communicate with an RPM4 the RPM4 s port must be set to Baud rate 9200 to 19200 Parity Even Data bits 7 Stop bit 1 When RPMA is activated by a a PPC3 the PPC3 sets the RPM4 COM port baud rate to 19200 The COM port keeps this setting until power is cycled Cycling power restores the previous baud rate setting The same is true for the COM of the first RPM4 in a chain of two RPM4s used with a PPC3 When RPM4 is initialized as an external device to PPC3
235. without affecting the other regardless of whether the SDS for the selected Q RPT is currently full time ON or OFF Caution must be used in differential mode or when using the HL Q RPT as this command can allow you to have one Q RPT open while the other Q RPT is closed If the HL Q RPT SDS is specified then both the Hi and the Lo Q RPT SDS will be affected This command does not affect the power up status of the SDS system Cmd sent SDS2 1 close the Lo Q RPT SDS Query reply e Cmd sent SDS1 0 open the Hi Q RPT SDS Query reply SDS1 0 Argument not a 0 or a 1 Invalid suffix SDS not installed on this Q RPT and pressure is close to ATM SDS not installed on this Q RPT and pressure not close to ATM SDSAUTO SDSACT 3 2 7 3 3 8 3 5 4 2004 2007 DH Instruments a Fluke Company Page 102 SDSACT Command Query Default 4 REMOTE OPERATION Read or set the status for both the Hi and Lo Q RPT s SDS systems This is equivalent to use of the SDS key from the RPMA front panel SDS state SDS SDS state SDS Arguments enhanced classic SDSAUTOn Command Query Default 0 OPEN the SDS system the active Q RPT and CLOSE the SDS system on the inactive Q RPT 1 to CLOSE the SDS system on both Q RPTs This command can be used to select one Q RPT at a time ensuring that the inactive Q RPT SDS is closed If a Q RPT s SDS is full time OFF
236. y a duly authorized officer of DH Instruments The above warranty and the obligations and liability of DH Instruments and its Authorized Service Providers exclude any other warranties or liabilities of any kind Table 29 DHI Authorized Service Providers DH INSTRUMENTS AUTHORIZED SERVICE PROVIDERS TELEPHONE NORMAL SUPPORT COMPANY DH Instruments ADDRESS 4765 East Beautiful Lane Phoenix AZ 85044 5318 USA FAX amp EMAIL Tel 602 431 9100 Fax 602 431 9559 cal repair dhinstruments com REGION Worldwide Minerva Meettechniek B V Chrysantstraat 1 3812 WX Amersfoort the NETHERLANDS Tel 31 33 46 22 000 Fax 31 33 46 22 218 info minervaipm com European Union Ohte Giken Inc Technology Center 258 1 Nakadai Kasumigaura machi Niihari Gun Ibaraki 300 0133 Tel 81 29 840 9111 Fax 81 29 840 9100 tech ohtegiken co jp Japan Asia DH Products Technical Service Division National Institute of Metrology Heat Division Pressure amp Vacuum Lab NO 18 Bei San Huan Donglu Beijing 100013 PR CHINA Page 137 Tel 010 64291994 ext 5 Tel 010 64218637 ext 5 Fax 010 64218703 cxcen mx cei gov cn Peoples Republic of China 2004 2007 DH Instruments a Fluke Company RPM4 OPERATION AND MAINTENANCE MANUAL NOTES 2004 2007 DH Instruments a Fluke Company Page 138 9 GLOSSARY D H DH Instruments A Fluke Company 9 GLOSSARY A type of Q RPT with a
237. y followed by the query operator If you are using the COM1 port the PPC1 will reply and you must wait for this reply If this field is not listed in the program message description then the Command type is not supported when using the Enhanced format Query This is the Enhanced program message syntax to request data from the RPM4 The RPM4 must be set to use the enhanced format see Section 3 5 2 3 The RPMA will always reply to a query You must wait for this reply before issuing another program message If this field Query is not listed in the program message description then the Query type for the program message is not supported when using the Enhanced format Classic This is the Classic program message syntax to send data to the RPM4 to execute an function or to query for data The RPM4 must be set to use the classic format see Section 3 5 2 3 The command may be followed by a and additional argument characters to show that argument s can be passed If there are multiple arguments then commas must separate them The RPMA will always reply to a Classic program message You must wait for this reply before issuing another program message If this field is not listed in the program message description then it is not supported when using the classic format Suffix Some commands support an optional suffix This suffix is used to specify a Q RPT to which the command applies since many settings are Q RPT spec
238. ynamic compensation for atmospheric changes using the on board barometer see Section 3 2 2 gauge Q RPTs can measure positive gauge pressure only BGxxx bi directional gauge Q RPTs can measure gauge and negative gauge pressure See Section 3 3 3 for additional information on absolute gauge and negative gauge measurement modes RPM4s configured with two Q RPT modules have independent TEST ports and can measure separately Two Q RPTs can also be used together to operate in differential mode see Section 3 3 3 1 and parallel mode see Section 3 2 4 2004 2007 DH Instruments a Fluke Company Page 2 1 INTRODUCTION Q RPTs of and lower are available with two different performance levels STANDARD class and PREMIUM class See the product label on the 4 rear panel the Q RPT module label on the rear panel and or the product calibration reports to determine the class of the Q RPT s installed in 4 Table 1 Reference Pressure Transducer Q RPT Module Designations and Ranges SI VERSION US VERSION Q RPT MAXIMUM MAXIMUM MAXIMUM MAXIMUM kPa kPa psi psi Absolute Gauge Absolute Gauge A3 5M 00 00 A2M A1 4M A700K A350K A200K A160K A100K BA100K G200K G100K G15K BG15K All AXXXX RPTs support absolute gauge and compound negative gauge modes All GXXXX RPTs are positive gauge mode only BG15K is bi directional gauge from 15 to 15 kPa 2 2 to 2 2 psi BA100K is a

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